📚 AS CIE Accounting: Unit Test Mock Paper Analysis | AS CIE 会计：单元测试模拟卷解析
Mock tests are a vital part of revision for AS CIE Accounting. This article presents a specially designed unit test covering core topics such as correction of errors, bank reconciliation, depreciation, disposal of non-current assets, and preparation of final accounts with adjustments. Each question is analysed in detail, highlighting the essential bookkeeping entries, calculation methods, and the common mistakes students make under exam pressure. By working through this mock paper and studying the step-by-step explanations, you will deepen your understanding of double-entry principles and improve your confidence for the real examination.
模拟考试是 AS CIE 会计总复习中必不可少的一环。本文特别设计了一份单元测试模拟卷，涵盖错误更正、银行调节表、折旧、非流动资产处置以及包含各项调整的期末财务报表编制等核心主题。文章对每一道题目都进行了详细解析，重点指出必要的簿记分录、计算方法以及学生在考试压力下容易犯的常见错误。通过攻克这套模拟卷并研读逐步讲解，你将加深对复式记账原理的理解，并提升应对真实考试的信心。
1. Overview of the Mock Test | 模拟卷概览
This mock test is structured to reflect the typical style of AS Level CIE Accounting unit assessments. It contains four compulsory questions that blend practical bookkeeping with end-of-period adjustments, mirroring the mix found in Paper 2. The total marks are 60, and a time allowance of 1 hour 15 minutes is recommended. The questions progress from correcting a trial balance and suspense account, to reconciling cash book and bank statement, to accounting for depreciation and a part-exchange disposal, and finally to producing an income statement and statement of financial position from a trial balance with several adjustments. Each task tests both technical accuracy and the ability to apply accounting concepts.
这份模拟卷参照 AS Level CIE 会计单元测试的典型风格设计。试卷包含四道必答题，融合了实务记账和期末调整，与 Paper 2 的命题组合相似。总分 60 分，建议用时 1 小时 15 分钟。题目内容由浅入深，从更正试算平衡表与暂记账户，到调节现金账簿与银行对账单，再到折旧核算及以旧换新处置，最后要求根据试算平衡表及若干调整事项编制利润表和财务状况表。每项任务既检验技术准确性，也考查运用会计概念的能力。
2. Question 1: Correction of Errors and Suspense Account | 问题一：错误更正与暂记账户
A trial balance failed to agree and the difference was posted to a suspense account. The following errors were later discovered: (i) A payment of $480 for rent was correctly entered in the cash book but debited to the rent account as $840. (ii) A sale of goods on credit, $620, was recorded only in the sales account; no entry was made in the trade receivables account. (iii) The purchase of a new delivery vehicle for $12,000 had been debited to the vehicle expenses account. (iv) Discount allowed of $95 had been credited to the discount received account. You are required to prepare the journal entries to correct these errors and to write up the suspense account.
某试算平衡表未能平衡，差额已记入暂记账户。后续发现以下错误：(i) 一笔 $480 的租金付款在现金账簿中正确记录，但在租金账户中借记为 $840。(ii) 一笔 $620 的赊销仅记录了销售账户，未在应收账款账户中做任何分录。(iii) 购置一辆新运输车辆 $12,000 被借记到车辆费用账户。(iv) 已给予的折扣 $95 错误地贷记到已获得折扣账户。要求编制更正这些错误的日记账分录，并开设暂记账户。
Journal corrections required:
| Double entry | Dr ($) | Cr ($) |
|---|---|---|
| Error (i): Rent overstated by $360 (840 − 480). Reduce rent expense: Credit rent, Debit suspense. | Suspense 360 | Rent 360 |
| Error (ii): Omission of trade receivable. Debit trade receivables, Credit sales (since sales was already recorded, only receivable need to be recorded; here we debit receivables, credit suspense or sales? Actually sale was recorded, so we need to record the receivable: debit trade receivables, credit sales? Wait, sales already credited once. Recording only sales means we credited sales, but no debit. So correct entry: debit trade receivables, credit sales – but sales already has a credit, now we need another credit? That would double sales. The error is a one-sided entry: sales credited, no debit. So to correct, we debit trade receivables, and credit what? The missing debit created a shortfall on debit side, so the balancing figure was in suspense originally. The correct double entry for a credit sale is Dr Trade receivables, Cr Sales. Since sales was already credited (in error, a partial entry), we now need to debit trade receivables. The corresponding credit was already in sales. But if the trial balance had a suspense, it implies the debits were less than credits by $620? Let’s think: error (ii) says sale recorded only in sales account. That means sales account was credited $620, but no debit. Thus debit side understated by $620. The initial suspense account would have been credited? Typically, if trial balance totals disagree, you put the difference into a suspense account. For the purpose of correction, we need to restore the missing debit: Dr Trade receivables $620, and the credit side? Since sales was already credited, the double entry is now complete. But the initial imbalance was probably adjusted through suspense. However, the instruction says to correct the errors via journal and write up the suspense account. The standard approach: for error (ii), we simply need to record the missing debit: Dr Trade receivables 620, Cr Suspense 620, because the credit side (sales) is correct, and the suspense account will then be cleared. In many textbooks, omission of a debit entry is corrected by debiting the omitted account and crediting suspense. So we’ll do that. Alternative is Dr Trade receivables, Cr Sales – but that credits sales again, incorrectly doubling revenue. So the safe correction is Dr Trade receivables 620, Cr Suspense 620. The initial difference put into suspense would have been credited? To balance. Later we clear suspense. So here we credit suspense 620. This will offset the earlier debit or credit in suspense. Good. | Trade receivables 620 | Suspense 620 |
| Error (iii): Purchase of vehicle wrongly treated as expense. Correct: Dr Vehicles (non-current asset) $12,000, Cr Vehicle expenses $12,000. No suspense involved. | Vehicles 12,000 | Vehicle expenses 12,000 |
| Error (iv): Discount allowed posted to discount received. Correct by debiting discount allowed, crediting discount received with $95 each? Actually the incorrect entry was Cr Discount received 95, while it should have been Dr Discount allowed. So we need to eliminate the credit in discount received and record the debit in discount allowed. Journal: Dr Discount allowed 95, Dr Discount received 95, Cr Suspense 190? Wait, no suspense if we simply reverse and correct. The wrong entry: Cr Discount received 95 (credit). Correct entry: Dr Discount allowed 95, Cr Trade receivables? But the cash book may have been posted correctly. For discount allowed, double entry is Dr Discount allowed, Cr Trade receivables. If the discount was allowed, the cash received was net, and discount allowed was not debited. The error says discount allowed had been credited to discount received account, which means they made an entry: Dr Cash/Bank? Actually when a customer takes a discount, you receive less cash. The accounting entry: Dr Cash (net), Dr Discount allowed, Cr Trade receivables (gross). If the cash book correctly recorded the net receipt, but discount was credited to discount received instead of debiting discount allowed, the trial balance effect is that debits are understated by the discount amount (because the missing debit discount allowed) and credits are overstated (discount received wrongly credited). To correct: debit discount allowed $95, debit discount received $95 (to cancel the wrong credit), and credit suspense $190? Or debit discount allowed, credit discount received, and no suspense? Let’s see. If the error was: they debited cash, credited discount received 95 and credited trade receivables for gross amount? Actually, if discount allowed is wrongly treated as discount received, the entry would have been: Dr Cash (net), Dr ? discount received? No, discount received is a credit entry. So the complete entry might have been: Dr Cash, Cr Discount received 95, Cr Trade receivables (gross? not possible). This is messy. In exams, the standard correction for “discount allowed posted to discount received” is: Dr Discount allowed 95, Dr Discount received 95 (to reverse the credit), Cr Suspense 190 (since the original error created an excess credit of 95 in discount received and a missing debit of 95 in discount allowed, total difference 190). Or a simpler correction: suspend the difference. But the marking scheme usually expects: Debit Discount allowed with the amount, Debit Discount received (to cancel the erroneous credit), and the opposite entry to Suspense. Alternatively, you can correct by: Dr Discount allowed 95, Cr Discount received 95, and also adjust suspense? We’ll present the safest version: Dr Discount allowed $95, Dr Discount received $95, Cr Suspense $190. Explanation: To remove the wrongful credit in discount received and record the correct debit in discount allowed, with the net effect on suspense. However, some may argue no suspense is needed if you simply reverse and redo. I’ll use a clear approach: Journal: Dr Discount allowed 95, Cr Discount received 95 (this cancels the wrong credit and establishes the correct debit? No, crediting discount received removes the credit, but discount allowed needs a debit. So Dr Discount allowed 95, Cr Discount received 95 achieves that. But then double entry is complete: debit discount allowed, credit discount received – no suspense. But that implies discount received was credited originally, so we need to debit it to cancel. If we credit discount received again, that would increase credit. Wait, careful: The wrong entry had a credit in discount received. To cancel it, we debit discount received. So entry: Dr Discount received 95. To record discount allowed, we debit discount allowed 95. The corresponding credit? If we just do Dr Discount allowed 95, Dr Discount received 95, that’s two debits, no credit, so imbalance. So we need a credit. The missing credit could be to Suspense to reflect that the original error caused an imbalance. The original error: debit side missing discount allowed 95, credit side had an extra credit (discount received) 95. So the trial balance would have a net credit difference of 190 (or debit difference depending on others). Typically, the correction requires using a suspense account. So we’d have: Dr Discount allowed 95, Dr Discount received 95, Cr Suspense 190. That balances. This is a common correcting entry. I’ll use that. | Discount allowed 95 Discount received 95 |
Suspense 190 |
需要编制的更正日记账：
| 复式分录 | 借 ($) | 贷 ($) |
|---|---|---|
| 错误(i)：租金多记 $360（840 − 480）。冲减租金费用：贷记租金，借记暂记。 | 暂记 360 | 租金 360 |
| 错误(ii)：遗漏应收账款借方。借记应收账款，贷记暂记（因原始销售分录已存在，此处补记缺失借方，差额由暂记平衡）。 | 应收账款 620 | 暂记 620 |
| 错误(iii)：车辆购置误作费用。正确：借记车辆（非流动资产）$12,000，贷记车辆费用 $12,000。 | 车辆 12,000 | 车辆费用 12,000 |
| 错误(iv)：已给予折扣误记入已获得折扣。更正：借记已给予折扣 $95，借记已获得折扣 $95（抵销原错误贷记），贷记暂记 $190。 | 已给予折扣 95 已获得折扣 95 |
暂记 190 |
The suspense account is then opened. Assume the initial difference placed in suspense was a credit balance of $450 (arising from the above errors). After posting the corrections, the suspense account will clear to zero. The working is: Opening credit balance $450; then debit $360 (error i) and debit $620 (error ii) and credit $190 (error iv)? Wait, entry (i) we debited suspense 360, so that reduces credit balance. Entry (ii) we credited suspense 620, increasing credit balance. Entry (iv) we credited suspense 190, increasing credit balance. Net effect: debit 360 vs credits 620+190=810, so net credit 450, which clears the opening credit 450. So suspense is eliminated, proving the errors have been fully rectified.
随后开设暂记账户。假设试算表中最初记入暂记的差额为贷方余额 $450（由上述错误导致）。过账更正分录后，暂记账户将清零。计算过程：期初贷方余额 $450；加入借方 $360（错误 i）和贷方 $620（错误 ii）以及贷方 $190（错误 iv）。净变动为借方 $360，贷方总计 $810，净贷方增加 $450，与期初贷方余额 $450 抵销，暂记账户归零，证明所有错误已完全更正。
3. Step-by-Step Analysis for Q1 | 逐步解析Q1
Many candidates attempt to correct errors without linking them to the suspense account. Always ask: was the original entry one-sided or two-sided? If only one side was posted, suspense is normally involved. For error (ii), since sales were credited but trade receivables were not debited, the debit side was understated, so we debit trade receivables and credit suspense. For error (iv), the mistake involved a complete but incorrect double entry; however, because both sides of the trial balance were affected unequally (missing debit in discount allowed, extra credit in discount received), a difference remained, requiring a suspense correction. Practice writing journal narratives that clearly describe each correction, as marks are frequently awarded for proper descriptions.
许多考生试图在不联系暂记账户的情况下更正错误。务必自问：原始分录是单边还是双边？若只登记了一边，通常就会涉及暂记账户。就错误 (ii) 而言，销售已贷记但应收账款未借记，导致借方被低估，因此我们需要借记应收账款并贷记暂记。错误 (iv) 虽是一笔完整但错误的复式分录，但由于试算平衡表两方受影响程度不同（已给予折扣借方缺失、已获得折扣贷方虚增），仍然产生差异，需要通过暂记更正。练习编写能清楚描述每笔更正的分录摘要至关重要，因为考试经常对恰当的说明给予分数。
4. Question 2: Bank Reconciliation Statement | 问题二：银行调节表
The cash book of Ashton Ltd showed a debit balance of $3,150 on 31 March 2024. The bank statement on the same date showed a credit balance of $4,280. Investigation revealed: (1) Bank charges of $45 appeared on the bank statement but had not been entered in the cash book. (2) A direct debit payment of $360 to an insurance company was recorded on the bank statement but not in the cash book. (3) Cheques totalling $890 sent to suppliers had not yet been presented for payment. (4) A deposit of $1,200 paid into the bank on 31 March was not credited on the bank statement until 2 April. (5) A cheque received from a customer for $155 had been returned unpaid, but no adjustment had been made in the cash book. Required: Update the cash book and prepare a bank reconciliation statement.
Ashton 有限公司 2024 年 3 月 31 日现金账簿显示借方余额 $3,150。同日银行对账单显示贷方余额 $4,280。经查发现：(1) 银行手续费 $45 已列示于对账单，但尚未记入现金账簿。(2) 一笔支付给保险公司的直接借记 $360 已记于对账单，但现金账簿未记录。(3) 签发给供应商的支票共计 $890 尚未提交付款。(4) 3 月 31 日存入银行的 $1,200 在对账单上直到 4 月 2 日才贷记。(5) 收到客户的一张 $155 支票因空头被退回，但现金账簿未做调整。要求：更新现金账簿并编制银行调节表。
Step 1: Adjust cash book – The cash book must be updated for items appearing on the bank statement but not yet recorded. Bank charges $45 (Cr cash book), direct debit $360 (Cr cash book), and the dishonoured cheque $155 (Cr cash book, as cash book had been debited when received, now must reverse). Adjusted cash book balance: $3,150 − $45 − $360 − $155 = $2,590 Dr.
步骤一：调整现金账簿 – 需将对账单已出现但未入账的项目更新到现金账簿。银行手续费 $45（贷记现金账簿），直接借记 $360（贷记现金账簿），退回支票 $155（贷记现金账簿，因收到时现金账簿已借记，现须冲回）。调整后现金账簿余额：$3,150 − $45 − $360 − $155 = $2,590（借方）。
Step 2: Bank reconciliation – Starting with the bank statement balance of $4,280 Cr (which is an overdraft from the bank’s perspective, but as per company’s records it is an asset if cash book is debit? Actually, bank statement credit balance means the bank owes that amount to the company, so it’s a positive bank balance. Therefore we start with $4,280 as a positive. Less unpresented cheques $890, add deposit not yet credited $1,200. Expected balance: $4,280 − $890 + $1,200 = $4,590. However, the adjusted cash book balance is $2,590 Dr, which indicates a positive balance. There is a discrepancy. Perhaps the cash book debit balance is an asset, so we expect the bank statement positive balance to match after adjustments. But the numbers don’t match. Let’s re‑examine: The bank statement credit balance of $4,280 is a liability of the bank (i.e. a positive balance). So it should equal the cash book debit balance after reconciling items. Let’s recast: Reconciliation starting from bank statement balance: $4,280 – unpresented cheques $890 + outstanding deposit $1,200 = $4,590. This should equal adjusted cash book. But our adjusted cash book is $2,590. There is a problem. Possibly the initial cash book balance was an overdraft? But it’s given as debit balance, which is an asset. Perhaps the dishonoured cheque needs to be considered differently. When a cheque is returned unpaid, we originally debited cash book (increased bank balance) when received. Upon dishonour, we must credit cash book to reduce bank balance. So that is correct. Maybe the direct debit and bank charges reduce the cash book, so adjusted balance is indeed $2,590. Then the reconciliation can also be done starting from cash book balance. Standard format: Bank reconciliation statement as at 31 March 2024. We can start with the updated cash book balance and adjust for unpresented cheques and outstanding deposit. If we start with cash book $2,590, we add unpresented cheques? No, unpresented cheques have already been credited in cash book, but not yet shown on bank statement, so they reduce bank statement balance. To reconcile, we need to calculate the bank statement balance. Actually typical reconciliation: Balance per cash book (updated) $X; Add: unpresented cheques; Less: deposit not yet credited; Balance per bank statement should then be $Y. But here if we add unpresented cheques, we increase the cash book balance to derive bank statement. Wait, rule: If starting from cash book, unpresented cheques are added because they have been deducted in cash book but not yet by bank. Outstanding lodgements are deducted because they have been added in cash book but not yet by bank. So: Updated cash book $2,590 + Unpresented cheques $890 = $3,480; Less: Deposit not yet credited $1,200 = $2,280. That would give bank statement balance $2,280, not $4,280. So something is off. Let’s reconsider the bank statement credit balance: $4,280. If the cash book had a debit balance of $3,150, after adjustments it becomes $2,590. The difference must be large. Perhaps the $890 unpresented cheques are already in cash book (deducted), and the deposit $1,200 is already in cash book (added). So cash book balance $2,590 already reflects those. To reconcile, bank statement would be: Balance per bank statement $4,280; Less: unpresented cheques ($890); Add: outstanding deposit $1,200; Adjusted bank balance $4,590. That should equal the cash book adjusted balance, but it doesn’t. So there is a missing item? Possibly the direct debit and bank charges were already in bank statement, which is why the bank statement showed $4,280 after those items. So when we start with bank statement $4,280, we only adjust for timing differences. But the cash book after adjusting for bank charges etc. is $2,590, indicating a large discrepancy that might be due to other errors. However, in exam questions, the numbers are usually chosen to reconcile. I’ll adjust the narrative: The bank statement credit balance $4,280 might be an error in my assumption; perhaps the bank statement credit balance is actually an overdraft? But a credit balance on a bank statement means the customer has a positive balance (asset). So I’ll change the data to make it reconcile: Let’s make initial cash book debit $3,150. Bank statement credit $4,280. After updating cash book for $45, $360, $155, balance = $3,150 – 560 = $2,590. Then we find that the difference between bank statement $4,280 and updated cash book $2,590 is $1,690. This could be explained by unpresented cheques $890 and outstanding deposit $1,200? $4,280 – 890 + 1200 = $4,590, not $2,590. To reconcile, we need the bank statement balance to be less than cash book? Let’s check: If we start from cash book $2,590, add unpresented cheques $890 (since they are deducted from cash book but not yet bank), we get $3,480. Subtract outstanding deposit $1,200 (since added in cash book but not bank) = $2,280. That would be bank statement balance. So the bank statement should be $2,280, not $4,280. So the numbers in my mock need adjustment. Instead, let’s design plausible figures: Initial cash book debit $2,800. Bank statement credit $3,450. Bank charges $30, direct debit $200, dishonoured cheque $150. Adjusted cash book: 2800 – 30 – 200 – 150 = $2,420. Unpresented cheques $680, deposit in transit $1,350. Bank reconciliation: Cash book $2,420 + unpresented $680 – deposit in transit $1,350 = $1,750 (which would be bank statement?). That also doesn’t match. Better to set bank statement balance as the result. Standard question: The bank statement balance may be larger, and after adjusting, they match. Let’s set: Cash book debit $4,000. Bank statement credit $5,500. Items: bank charges $40, direct debit $360, dishonoured cheque $200. Adjusted cash book: $4,000 – 600 = $3,400. Unpresented cheques $2,500, outstanding deposit $1,400. Reconciliation: Cash book $3,400 + unpresented $2,500 = $5,900; less outstanding deposit $1,400 = $4,500. Not $5,500. Hmm. Let’s instead start from bank statement and calculate cash book. I’ll pick: Adjusted cash book balance $2,590 (as earlier). Then the bank statement balance should be $2,590 – unpresented cheques + outstanding deposit? No. The relationship: Bank statement balance = Cash book balance + unpresented cheques – outstanding lodgements. Or Cash book balance + unpresented cheques = Balance per bank statement + outstanding lodgements. So if we want bank statement to be $4,280, then $4,280 = $2,590 + unpresented cheques – outstanding lodgements? No, $4,280 = $2,590 + unpresented cheques – outstanding lodgements. So unpresented cheques – outstanding lodgements = $1,690. If we set unpresented cheques $2,000, outstanding lodgements $310, then difference $1,690. But the original data gave $890 and $1,200, which sums to -310. So I’ll change the data to make it work: Unpresented cheques $2,000; outstanding deposit $310. Then bank statement $4,280 = $2,590 + 2,000 – 310 = $4,280. So the question’s data can be adjusted to: unpresented cheques $2,000, deposit not credited $310. But in my earlier text I already wrote $890 and $1,200. I’ll revise that paragraph. Since this is a mock analysis, I can present the correct reconciled data as part of the solution, and no need to keep the same numbers. I will restate the question in the solution with working figures that reconcile. In the article, I’ll present the question as: Bank statement balance $4,280 Cr, cash book $3,150 Dr, bank charges $45, direct debit $360, dishonoured cheque $155. Unpresented cheques $2,000, deposit in transit $310. Then everything reconciles. I’ll edit the earlier paragraph to reflect that. Now in the analysis, I’ll show the steps.
我们将调整数据以使其相符：银行对账单贷方余额 $4,280，现金账簿借方余额 $3,150，银行手续费 $45，直接借记 $360，退回支票 $155，未兑付支票 $2,000，在途存款 $310。这样调节后即可平账。
5. Key Steps in Bank Reconciliation | 银行调节表关键步骤
Updated cash book: Dr Balance b/d $3,150 − bank charges $45 − direct debit $360 − dishonoured cheque $155 = $2,590 Dr. The bank reconciliation statement starting with the bank statement balance is: $4,280 − unpresented cheques $2,000 + outstanding deposit $310 = $2,590, which matches the adjusted cash book. Always remember that unpresented cheques are deducted from the bank statement balance because the bank has not yet paid them, and outstanding lodgements are added because the bank has not yet recorded the receipt. A common mistake is to add unpresented cheques and deduct lodgements – confusing the direction. Use the mnemonic ‘unpresented cheques reduce bank balance, outstanding lodgements increase it’ when adjusting the bank statement to find the true cash position.
更新后的现金账簿：期初借方余额 $3
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