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Primary 4 Mathematics Practice Paper 5
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Questions
TuitionGoWhere Practice Paper - Mathematics Primary 4
TuitionGoWhere Practice Paper (AI) — Version 5
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper — Whole Numbers (up to 100,000)
Duration: 50 minutes
Total Marks: 50
Name: ___________________________
Class: Primary 4 _______
Date: _______________
Instructions to Candidates
- Do not open this booklet until you are told to do so.
- Follow all instructions carefully.
- Answer all questions.
- Show your working clearly in the space provided.
- The number of marks is given in brackets [ ] at the end of each question or part question.
- The total marks for this paper is 50.
Section A: Multiple-Choice Questions (10 marks)
Questions 1 to 5 carry 2 marks each. Choose the correct answer and write its number (1, 2, 3 or 4) in the brackets provided.
1. In the number 64,289, which digit is in the ten thousands place? [2]
(1) 6
(2) 4
(3) 2
(4) 9
Answer: (_____)
2. Round 37,452 to the nearest thousand. [2]
(1) 37,000
(2) 37,500
(3) 38,000
(4) 40,000
Answer: (_____)
3. Which of the following numbers is the smallest? [2]
(1) 45,678
(2) 45,687
(3) 45,768
(4) 45,786
Answer: (_____)
4. What is the value of the digit 8 in the number 58,391? [2]
(1) 8
(2) 80
(3) 800
(4) 8,000
Answer: (_____)
5. 72,000 + 3,000 + 400 + 50 + 6 = __________ [2]
(1) 75,456
(2) 75,465
(3) 75,546
(4) 75,564
Answer: (_____)
Section B: Short-Answer Questions (20 marks)
Questions 6 to 15 carry 2 marks each. Write your answers in the spaces provided. Show your working clearly.
6. Write 84,307 in words. [2]
7. In the number 92,546, what does the digit 5 stand for? [2]
8. Round 48,673 to the nearest hundred. [2]
9. Arrange the following numbers in order, starting from the greatest. [2] 36,482 ; 36,842 ; 36,284 ; 36,428
10. Find the sum of 24,568 and 38,742. [2]
11. Subtract 19,876 from 50,000. [2]
12. Multiply 4,327 by 6. [2]
13. Divide 36,480 by 8. [2]
14. A number rounded to the nearest thousand is 56,000. What is the smallest possible value of this number? [2]
15. The difference between two numbers is 12,345. The smaller number is 28,764. What is the larger number? [2]
Section C: Problem-Solving Questions (20 marks)
Questions 16 to 20 carry 4 marks each. Show your working clearly and write your final answer in the space provided.
16. Singapore's National Library has 48,765 books in the children's section and 35,289 books in the young adults' section.
(a) How many books are there in both sections altogether? [2]
(b) If 12,450 books are borrowed, how many books are left? [2]
(a) ________________________________________________________________________
(b) ________________________________________________________________________
17. A factory produced 84,500 toys in January. In February, it produced 12,350 fewer toys than in January.
(a) How many toys were produced in February? [2]
(b) What was the total number of toys produced in the two months? [2]
(a) ________________________________________________________________________
(b) ________________________________________________________________________
18. Mrs Tan bought 6 identical laptops for her company. Each laptop cost 1,245.(a)Howmuchdidshepayforthe6laptopsaltogether?[2](b)Ifshepaidwithten1,000 notes, how much change did she receive? [2]
(a) ________________________________________________________________________
(b) ________________________________________________________________________
19. A stadium has 48,000 seats. During a concert, 37,845 seats were occupied.
(a) How many seats were empty? [2]
(b) The empty seats were divided equally into 5 sections. How many empty seats were in each section? [2]
(a) ________________________________________________________________________
(b) ________________________________________________________________________
20. Mr Lim has 85,000.Hewantstobuyacarthatcosts68,450 and a motorcycle that costs $12,890.
(a) What is the total cost of the car and the motorcycle? [2]
(b) Does Mr Lim have enough money to buy both? If yes, how much will he have left? If no, how much more does he need? [2]
(a) ________________________________________________________________________
(b) ________________________________________________________________________
END OF PAPER
Please check your work carefully.
Answers
TuitionGoWhere Practice Paper - Mathematics Primary 4 (Answer Key)
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper — Whole Numbers (up to 100,000) — Version 5
Total Marks: 50
Section A: Multiple-Choice Questions (10 marks)
1. Answer: (1) 6 [2]
Explanation: In the number 64,289, the digits from left to right are: 6 (ten thousands), 4 (thousands), 2 (hundreds), 8 (tens), 9 (ones). The digit in the ten thousands place is 6.
Common mistake: Confusing "ten thousands" with "thousands" place.
2. Answer: (1) 37,000 [2]
Explanation: To round 37,452 to the nearest thousand, look at the hundreds digit (4). Since 4 < 5, we round down. The thousands digit (7) stays the same, and all digits to the right become 0. So 37,452 ≈ 37,000.
Common mistake: Rounding up because the tens digit is 5, but we only look at the hundreds digit when rounding to the nearest thousand.
3. Answer: (1) 45,678 [2]
Explanation: Compare numbers digit by digit from left to right. All numbers have 45,___ so compare the hundreds digit: 6, 6, 7, 7. The smallest hundreds digit is 6. Between 45,678 and 45,687, compare tens: 7 < 8, so 45,678 is the smallest.
4. Answer: (4) 8,000 [2]
Explanation: In 58,391, the digit 8 is in the thousands place. Its value is 8 × 1,000 = 8,000.
Common mistake: Choosing 800 (hundreds place) or 80 (tens place) by misidentifying the place value.
5. Answer: (1) 75,456 [2]
Explanation: Add by place value:
72,000 + 3,000 = 75,000
75,000 + 400 = 75,400
75,400 + 50 = 75,450
75,450 + 6 = 75,456
Alternatively: 72,000 + 3,456 = 75,456.
Section B: Short-Answer Questions (20 marks)
6. Answer: Eighty-four thousand, three hundred and seven [2]
Explanation: Write the number in words by place value groups: 84 (thousands) → "eighty-four thousand", 307 → "three hundred and seven". Remember to use "and" before the last two digits when there are hundreds but no tens (or when tens and ones are not zero).
Marking: 1 mark for "eighty-four thousand", 1 mark for "three hundred and seven".
7. Answer: 500 (or five hundred) [2]
Explanation: In 92,546, the digit 5 is in the hundreds place. Its value is 5 × 100 = 500.
Marking: 1 mark for identifying hundreds place, 1 mark for correct value (500).
8. Answer: 48,700 [2]
Explanation: To round 48,673 to the nearest hundred, look at the tens digit (7). Since 7 ≥ 5, round up. The hundreds digit (6) increases by 1 to become 7, and the tens and ones become 0. So 48,673 ≈ 48,700.
Common mistake: Rounding down to 48,600 by looking at the ones digit instead of the tens digit.
9. Answer: 36,842 ; 36,768 ; 36,482 ; 36,428 [2]
Wait — correction: The numbers given are 36,482 ; 36,842 ; 36,284 ; 36,428.
Comparing thousands: all 36.
Hundreds: 4, 8, 2, 4 → greatest is 8 (36,842).
Next compare 36,482 and 36,428 (both have 4 hundreds): tens digit 8 > 2, so 36,482 > 36,428.
Smallest is 36,284 (2 hundreds).
Correct order (greatest to smallest): 36,842 ; 36,482 ; 36,428 ; 36,284
Marking: 2 marks for fully correct order; 1 mark for 3 out of 4 correct.
10. Answer: 63,310 [2]
Working:
24,568
+ 38,742
--------
63,310
Explanation: Add column by column from right: 8+2=10 (write 0, carry 1); 6+4+1=11 (write 1, carry 1); 5+7+1=13 (write 3, carry 1); 4+8+1=13 (write 3, carry 1); 2+3+1=6.
Marking: 1 mark for correct method/working, 1 mark for correct answer.
11. Answer: 30,124 [2]
Working:
50,000
- 19,876
--------
30,124
Explanation: Subtract with regrouping. Since we cannot subtract 6 from 0 in the ones place, we regroup from the tens, but tens is also 0, so we continue regrouping from hundreds, then thousands, then ten thousands.
50,000 = 40,000 + 9,000 + 900 + 90 + 10
Then: 10−6=4, 90−70=20, 900−800=100, 9,000−9,000=0, 40,000−10,000=30,000 → 30,124.
Marking: 1 mark for correct working, 1 mark for correct answer.
12. Answer: 25,962 [2]
Working:
4,327
× 6
-------
25,962
Explanation: Multiply each digit by 6 from right to left with carrying: 7×6=42 (write 2, carry 4); 2×6=12+4=16 (write 6, carry 1); 3×6=18+1=19 (write 9, carry 1); 4×6=24+1=25.
Marking: 1 mark for correct working, 1 mark for correct answer.
13. Answer: 4,560 [2]
Working:
8 ) 36,480
32
--
44
40
--
48
48
--
0
Explanation: Long division: 36÷8=4 remainder 4; bring down 4 → 44÷8=5 remainder 4; bring down 8 → 48÷8=6; bring down 0 → 0÷8=0.
Check: 4,560 × 8 = 36,480 ✓
Marking: 1 mark for correct working, 1 mark for correct answer.
14. Answer: 55,500 [2]
Explanation: When a number rounds to 56,000 to the nearest thousand, the original number could be from 55,500 to 56,499. The smallest possible value is 55,500.
Reasoning: At 55,500, the hundreds digit is 5, so we round up to 56,000. Any number less than 55,500 (e.g., 55,499) would round down to 55,000.
Common mistake: Answering 55,000 (which rounds to 55,000, not 56,000).
15. Answer: 41,109 [2]
Working:
Larger number = Smaller number + Difference
= 28,764 + 12,345
= 41,109
Check: 41,109 − 28,764 = 12,345 ✓
Marking: 1 mark for correct method (addition), 1 mark for correct answer.
Section C: Problem-Solving Questions (20 marks)
16. (a) Answer: 84,054 books [2]
Working:
48,765 + 35,289 = 84,054
48,765
+ 35,289
--------
84,054
Explanation: Add the books in both sections to find the total.
(b) Answer: 71,604 books [2]
Working:
84,054 − 12,450 = 71,604
84,054
- 12,450
--------
71,604
Explanation: Subtract the borrowed books from the total to find books left.
Marking for Q16: 2 marks each part (1 for method, 1 for answer). Follow-through allowed: if (a) is wrong but (b) correctly subtracts 12,450 from (a)'s answer, award method mark for (b).
17. (a) Answer: 72,150 toys [2]
Working:
84,500 − 12,350 = 72,150
84,500
- 12,350
--------
72,150
Explanation: February production is 12,350 fewer than January.
(b) Answer: 156,650 toys [2]
Working:
84,500 + 72,150 = 156,650
84,500
+ 72,150
--------
156,650
Explanation: Add January and February production for the two-month total.
Marking for Q17: 2 marks each part. Follow-through from (a) to (b) allowed.
18. (a) Answer: $7,470 [2]
Working:
1,245 × 6 = 7,470
1,245
× 6
-------
7,470
Explanation: Multiply the cost of one laptop by 6 to find the total cost.
(b) **Answer: 2,530∗∗[2]∗∗Working:∗∗Amountpaid=10×1,000 = 10,000Change=10,000 − 7,470=2,530
10,000
- 7,470
--------
2,530
Explanation: Subtract the total cost from the amount paid.
Marking for Q18: 2 marks each part. Follow-through from (a) to (b) allowed.
19. (a) Answer: 10,155 seats [2]
Working:
48,000 − 37,845 = 10,155
48,000
- 37,845
--------
10,155
Explanation: Subtract occupied seats from total seats to find empty seats.
(b) Answer: 2,031 seats [2]
Working:
10,155 ÷ 5 = 2,031
5 ) 10,155
10
--
01
0
--
15
15
--
05
5
--
0
Explanation: Divide the empty seats equally among 5 sections.
Check: 2,031 × 5 = 10,155 ✓
Marking for Q19: 2 marks each part. Follow-through from (a) to (b) allowed.
20. (a) **Answer: 81,340∗∗[2]∗∗Working:∗∗68,450 + 12,890=81,340
68,450
+ 12,890
--------
81,340
Explanation: Add the cost of the car and motorcycle.
(b) **Answer: Yes, he has enough. He will have 3,660left.∗∗[2]∗∗Working:∗∗85,000 − 81,340=3,660
85,000
- 81,340
--------
3,660
Explanation: Compare Mr Lim's money (85,000)withthetotalcost(81,340). Since 85,000 > 81,340, he has enough. Subtract to find the remainder.
Marking for Q20: 2 marks for (a), 2 marks for (b) — 1 mark for "Yes", 1 mark for correct amount left ($3,660). Follow-through from (a) to (b) allowed.
Marking Summary
- Section A (Q1–5): 5 × 2 = 10 marks
- Section B (Q6–15): 10 × 2 = 20 marks
- Section C (Q16–20): 5 × 4 = 20 marks
- Total: 50 marks
General Marking Notes for Teachers
- Follow-through marks: In multi-part questions, if a student makes an error in an earlier part but uses that answer correctly in a later part, award the method mark(s) for the later part.
- Working: For 2-mark questions, award 1 mark for correct method/working shown, 1 mark for correct final answer. For 4-mark questions (2+2), apply the same principle per sub-part.
- Units: For money questions, answers must include the dollar sign ($) or the word "dollars". For other quantities, include the unit (books, toys, seats).
- Number words: In Q6, accept "Eighty-four thousand three hundred and seven" or "Eighty-four thousand, three hundred and seven" (comma optional). Do not accept "Eighty four thousand..." (missing hyphen in eighty-four).
- Rounding questions: Ensure students understand which digit to look at (the digit to the right of the target place value).
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