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Primary 5 Mathematics Practice Paper 5

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Questions

TuitionGoWhere Practice Paper - Mathematics Primary 5

TuitionGoWhere Practice Paper (AI)
Subject: Mathematics
Level: Primary 5
Paper: Practice Paper 5 (Whole Numbers)
Duration: 45 minutes
Total Marks: 50

Name: ________________________
Class: Primary 5 ______
Date: _______________

Instructions to Candidates

Do not open this booklet until you are told to do so.
Follow all instructions carefully.
Answer all questions.
Write your answers in this booklet.
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.
You are not allowed to use a calculator.

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 4,728,591, what is the value of the digit 7?
(1) 70,000
(2) 700,000
(3) 7,000
(4) 700
[2]

2. Round off 3,847,265 to the nearest ten thousand.
(1) 3,840,000
(2) 3,850,000
(3) 3,800,000
(4) 3,900,000
[2]

3. Which of the following numbers is the greatest?
(1) 2,456,789
(2) 2,465,789
(3) 2,456,879
(4) 2,465,879
[2]

4. Find the value of 5,000,000 + 300,000 + 40,000 + 6,000 + 800 + 20 + 9.
(1) 5,346,829
(2) 5,346,289
(3) 5,346,892
(4) 5,364,829
[2]

5. A factory produced 8,452,300 toys in a year. What is this number when rounded off to the nearest hundred thousand?
(1) 8,400,000
(2) 8,450,000
(3) 8,500,000
(4) 8,550,000
[2]

Section B: Short Answer Questions (20 marks)

Questions 6 to 15 carry 2 marks each. Show your working clearly and write your answers in the spaces provided.

6. Write 6,040,305 in words.

[2]

7. What is the missing number in the number pattern below?
4,500,000, 4,450,000, 4,400,000, __________, 4,300,000
Ans: _______________
[2]

8. Find the difference between 7,000,000 and 3,482,619.
Ans: _______________
[2]

9. Multiply 4,208 by 300.
Ans: _______________
[2]

10. Divide 5,678,400 by 800.
Ans: _______________
[2]

11. A library has 2,345,678 books. Another library has 1,876,543 books. How many more books does the first library have than the second?
Ans: _______________
[2]

12. Find the product of 6,705 and 40.
Ans: _______________
[2]

13. What is the remainder when 9,876,543 is divided by 9?
Ans: _______________
[2]

14. Arrange the following numbers from the smallest to the greatest:
5,060,708 ; 5,067,080 ; 5,060,870 ; 5,067,800
Ans: _______________ , _______________ , _______________ , _______________
[2]

15. A number when rounded off to the nearest thousand is 4,500,000. What is the greatest possible value of this number?
Ans: _______________
[2]

Section C: Structured / Long-Answer Questions (20 marks)

Questions 16 to 20 carry 4 marks each. Show your working clearly and write your answers in the spaces provided.

16. Mr Tan had $8,500,000. He spent$ 2,345,678 on a house and $1,876,543 on a car. (a) How much did he spend altogether? (b) How much money had he left? Ans: (a)$ _______________
(b) $_______________
[4]

17. A stadium has 45,678 seats. During a concert, 38,456 seats were occupied.
(a) How many seats were empty?
(b) If each ticket cost $120, how much money was collected from the occupied seats? Ans: (a) _______________                   (b)$ _______________
[4]

18. A factory produces 12,345 toys each day.
(a) How many toys does it produce in 25 days?
(b) If the toys are packed into boxes of 50, how many boxes are needed to pack all the toys produced in 25 days?
Ans: (a) _______________
(b) _______________
[4]

19. The sum of three numbers is 1,000,000. The first number is 245,678. The second number is 154,321 more than the first number. What is the third number?
Ans: _______________
[4]

20. A book has 456 pages. A library has 1,234 copies of this book.
(a) How many pages are there in all the copies altogether?
(b) If a student reads 50 pages a day, how many days will he take to read one copy of the book?
Ans: (a) _______________
(b) _______________
[4]

END OF PAPER
Total Marks: 50

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Answers

TuitionGoWhere Practice Paper - Mathematics Primary 5 (Answer Key)

Subject: Mathematics
Level: Primary 5
Paper: Practice Paper 5 (Whole Numbers)
Total Marks: 50

Section A: Multiple-Choice Questions (10 marks)

1. Answer: (2) 700,000
Explanation: In 4,728,591, the digit 7 is in the hundred thousands place. Its value is 7 × 100,000 = 700,000.
Common mistake: Confusing hundred thousands (700,000) with ten thousands (70,000).

2. Answer: (2) 3,850,000
Explanation: To round to the nearest ten thousand, look at the thousands digit (7). Since 7 ≥ 5, round up the ten thousands digit from 4 to 5. The number becomes 3,850,000.
Working: 3,847,265 → ten thousands digit is 4, thousands digit is 7 → round up → 3,850,000.

3. Answer: (4) 2,465,879
Explanation: Compare digits from left to right (millions → hundred thousands → ten thousands → thousands → hundreds → tens → ones). All numbers have 2 millions and 4 hundred thousands. At ten thousands: 6 > 5, so options (2) and (4) are larger. At hundreds: 8 > 7, so (4) 2,465,879 is the greatest.

4. Answer: (1) 5,346,829
Explanation: Add by place value:
5,000,000 + 300,000 = 5,300,000
5,300,000 + 40,000 = 5,340,000
5,340,000 + 6,000 = 5,346,000
5,346,000 + 800 = 5,346,800
5,346,800 + 20 = 5,346,820
5,346,820 + 9 = 5,346,829

5. Answer: (3) 8,500,000
Explanation: To round to the nearest hundred thousand, look at the ten thousands digit (5). Since 5 ≥ 5, round up the hundred thousands digit from 4 to 5. The number becomes 8,500,000.
Working: 8,452,300 → hundred thousands digit is 4, ten thousands digit is 5 → round up → 8,500,000.

Section B: Short Answer Questions (20 marks)

6. Answer: Six million, forty thousand, three hundred and five
Explanation: Group digits in threes from right: 6,040,305. Read each group with its place value: 6 million, 040 thousand (forty thousand), 305 (three hundred and five).
Note: "And" is used before the last two digits (tens and ones) in British/Singapore convention.

7. Answer: 4,350,000
Explanation: The pattern decreases by 50,000 each time.
4,500,000 − 50,000 = 4,450,000
4,450,000 − 50,000 = 4,400,000
4,400,000 − 50,000 = 4,350,000
4,350,000 − 50,000 = 4,300,000 ✓

8. Answer: 3,517,381
Working:
7,000,000
− 3,482,619

3,517,381
Check: 3,517,381 + 3,482,619 = 7,000,000 ✓

9. Answer: 1,262,400
Working: 4,208 × 300 = 4,208 × 3 × 100 = 12,624 × 100 = 1,262,400
Alternative: 4,208 × 3 = 12,624, then add two zeros → 1,262,400.

10. Answer: 7,098
Working: 5,678,400 ÷ 800 = 5,678,400 ÷ 8 ÷ 100 = 709,800 ÷ 100 = 7,098
Check: 7,098 × 800 = 7,098 × 8 × 100 = 56,784 × 100 = 5,678,400 ✓

11. Answer: 469,135
Working:
2,345,678
− 1,876,543

469,135
Check: 469,135 + 1,876,543 = 2,345,678 ✓

12. Answer: 268,200
Working: 6,705 × 40 = 6,705 × 4 × 10 = 26,820 × 10 = 268,200

13. Answer: 0
Explanation: A number is divisible by 9 if the sum of its digits is divisible by 9.
Sum of digits: 9 + 8 + 7 + 6 + 5 + 4 + 3 = 42. 42 ÷ 9 = 4 remainder 6.
Wait — let's recalculate: 9+8+7+6+5+4+3 = 42. 42 is not divisible by 9 (9×4=36, 9×5=45).
Correction: 9,876,543 ÷ 9 = 1,097,393 remainder 6.
Answer: 6
Working: 9,876,543 ÷ 9 = 1,097,393 R 6.
Divisibility rule check: Sum of digits = 42. 42 ÷ 9 = 4 R 6. Remainder = 6. ✓

14. Answer: 5,060,708 ; 5,060,870 ; 5,067,080 ; 5,067,800
Explanation: Compare from left to right:
All have 5,060,000 or 5,067,000.
5,060,708 < 5,060,870 (compare hundreds: 7 < 8)
5,060,870 < 5,067,080 (compare thousands: 0 < 7)
5,067,080 < 5,067,800 (compare hundreds: 0 < 8)

15. Answer: 4,500,499
Explanation: When rounding to the nearest thousand, numbers from 4,499,500 to 4,500,499 round to 4,500,000. The greatest is 4,500,499.
Check: 4,500,499 → thousands digit is 0, hundreds digit is 4 (< 5) → rounds down to 4,500,000.
4,500,500 → hundreds digit is 5 (≥ 5) → rounds up to 4,501,000.

Section C: Structured / Long-Answer Questions (20 marks)

16.
(a) Amount spent altogether:
$2,345,678 +$ 1,876,543 = $4,222,221
Working:
2,345,678
+ 1,876,543

4,222,221

(b) Money left:
$8,500,000 −$ 4,222,221 = $4,277,779
Working:
8,500,000
− 4,222,221

4,277,779

Ans: (a) $4,222,221 (b)$ 4,277,779
[2 marks for (a), 2 marks for (b)]

17.
(a) Empty seats:
45,678 − 38,456 = 7,222
Working:
45,678
− 38,456

7,222

(b) Money collected:
38,456 × $120 = 38,456 × 12 × 10 = 461,472 × 10 =$ 4,614,720
Working:
38,456
× 120

         0
     769,120 (38,456 × 20)
  3,845,600 (38,456 × 100)

4,614,720

Ans: (a) 7,222 (b) $4,614,720
[2 marks for (a), 2 marks for (b)]

18.
(a) Toys in 25 days:
12,345 × 25 = 12,345 × 100 ÷ 4 = 1,234,500 ÷ 4 = 308,625
Alternative: 12,345 × 20 = 246,900; 12,345 × 5 = 61,725; Total = 308,625

(b) Boxes needed:
308,625 ÷ 50 = 308,625 ÷ 5 ÷ 10 = 61,725 ÷ 10 = 6,172.5
Since we cannot have half a box, we need 6,173 boxes (6,172 full boxes + 1 box for the remaining 25 toys).
Working: 308,625 ÷ 50 = 6,172 remainder 25 → 6,173 boxes.

Ans: (a) 308,625 (b) 6,173
[2 marks for (a), 2 marks for (b)]
Note: For (b), 1 mark for correct division (6,172.5 or 6,172 R 25), 1 mark for correct interpretation (6,173 boxes).

19.
First number: 245,678
Second number: 245,678 + 154,321 = 399,999
Sum of first two: 245,678 + 399,999 = 645,677
Third number: 1,000,000 − 645,677 = 354,323

Working:
245,678
+ 154,321

399,999 (second number)

245,678
+ 399,999

645,677 (sum of first two)

1,000,000
− 645,677

354,323 (third number)

Check: 245,678 + 399,999 + 354,323 = 1,000,000 ✓

Ans: 354,323
[4 marks: 1 mark for second number, 1 mark for sum of first two, 1 mark for subtraction, 1 mark for correct answer]

20.
(a) Total pages:
456 × 1,234
Working:
456
× 1,234

    1,824 (456 × 4)
   13,680 (456 × 30)
   91,200 (456 × 200)
  456,000 (456 × 1,000)

562,704

(b) Days to read one copy:
456 ÷ 50 = 9 remainder 6 → 10 days (9 full days + 1 day for the last 6 pages)
Working: 50 × 9 = 450 pages in 9 days. 6 pages left → 1 more day. Total = 10 days.

Ans: (a) 562,704 (b) 10 days
[2 marks for (a), 2 marks for (b)]
Note: For (b), 1 mark for division (9 R 6 or 9.12), 1 mark for correct interpretation (10 days).

END OF ANSWER KEY
Total Marks: 50