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Primary 4 Mathematics Decimals Quiz
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Questions
P4 Maths Quiz: Decimals
Questions: 20
Time: 30 minutes
Total Marks: 40
Instructions:
- Answer all questions
- Write your answers clearly in the spaces provided
- Show your working for calculation questions
Section A: Multiple Choice Questions (10 marks)
Choose the correct answer. Write 1, 2, 3 or 4 in the brackets.
1. Which decimal is the greatest? (2 marks)
- 0.103
- 0.095
- 0.138
- 0.129
Answer: ( )
2. Arrange these decimals from smallest to largest: 0.47, 0.407, 0.74 (2 marks)
- 0.47, 0.407, 0.74
- 0.407, 0.47, 0.74
- 0.74, 0.47, 0.407
- 0.407, 0.74, 0.47
Answer: ( )
3. Which decimal is equivalent to 3/10? (2 marks)
- 0.03
- 0.3
- 3.0
- 0.003
Answer: ( )
4. Round 19.199 to 1 decimal place. (2 marks)
- 19.1
- 19.2
- 19.20
- 20.0
Answer: ( )
5. Express 0.05 as a fraction in simplest form. (2 marks)
- 5/10
- 5/100
- 1/20
- 1/2
Answer: ( )
Section B: Short Answer Questions (15 marks)
6. Write these decimals in order from smallest to greatest: (3 marks) 2.38, 2.083, 2.8, 2.308
Answer: ________________
7. Calculate: (3 marks) 6.75 + 3.48 = ?
Show your working:
Answer: ________________
8. Calculate: (3 marks) 8.2 - 5.67 = ?
Show your working:
Answer: ________________
9. Convert these fractions to decimals: (3 marks)
(a) 1/4 = ________
(b) 3/5 = ________
(c) 7/10 = ________
10. Round these decimals to the nearest whole number: (3 marks)
**(a) 12.7 = ________**
**(b) 8.49 = ________**
**(c) 15.5 = ________**
Section C: Word Problems (15 marks)
11. Mrs Lim bought 2.5 kg of apples and 1.8 kg of oranges. What was the total mass of fruits she bought? (4 marks)
Show your working:
Answer: ________________ kg
12. John ran 3.75 km on Monday and 2.9 km on Tuesday. How much further did he run on Monday than on Tuesday? (4 marks)
Show your working:
Answer: ________________ km
13. A bottle contains 1.25 litres of water. If Sarah drinks 0.4 litres, how much water is left in the bottle? (4 marks)
Show your working:
Answer: ________________ litres
14. Tom bought 4 notebooks at $2.35 each. How much did he pay altogether? (3 marks)
Show your working:
Answer: $________________
End of Quiz
Check your answers before submitting.
Answers
P4 Maths Quiz: Decimals - Answer Key
Questions: 20
Time: 30 minutes
Total Marks: 40
Section A: Multiple Choice Questions (10 marks)
1. Which decimal is the greatest? (2 marks) Answer: (3) 0.138 Explanation: Compare tenths place: 0.1 > 0.0; then hundredths: 0.138 > 0.129 > 0.103
2. Arrange these decimals from smallest to largest: 0.47, 0.407, 0.74 (2 marks) Answer: (2) 0.407, 0.47, 0.74 Explanation: Compare tenths: 0.407 < 0.47 < 0.74
3. Which decimal is equivalent to 3/10? (2 marks) Answer: (2) 0.3 Explanation: 3/10 = 3 ÷ 10 = 0.3
4. Round 19.199 to 1 decimal place. (2 marks) Answer: (2) 19.2 Explanation: Look at hundredths place: 9 ≥ 5, so round up to 19.2
5. Express 0.05 as a fraction in simplest form. (2 marks) Answer: (3) 1/20 Explanation: 0.05 = 5/100 = 1/20 (simplified by dividing by 5)
Section B: Short Answer Questions (15 marks)
6. Write these decimals in order from smallest to greatest: (3 marks) 2.38, 2.083, 2.8, 2.308
Working: Compare tenths place: 2.083 < 2.308 < 2.38 < 2.8
Answer: 2.083, 2.308, 2.38, 2.8
7. Calculate: (3 marks) 6.75 + 3.48 = ?
Working:
6.75
+ 3.48
------
10.23
Answer: 10.23
8. Calculate: (3 marks) 8.2 - 5.67 = ?
Working:
8.20
- 5.67
------
2.53
Answer: 2.53
9. Convert these fractions to decimals: (3 marks)
(a) 1/4 = 0.25 (1 ÷ 4 = 0.25)
(b) 3/5 = 0.6 (3 ÷ 5 = 0.6)
(c) 7/10 = 0.7 (7 ÷ 10 = 0.7)
10. Round these decimals to the nearest whole number: (3 marks)
**(a) 12.7 = 13** (7 ≥ 5, round up)
**(b) 8.49 = 8** (4 < 5, round down)
**(c) 15.5 = 16** (5 ≥ 5, round up)
Section C: Word Problems (15 marks)
11. Mrs Lim bought 2.5 kg of apples and 1.8 kg of oranges. What was the total mass of fruits she bought? (4 marks)
Working:
2.5 + 1.8 = 4.3
Answer: 4.3 kg
12. John ran 3.75 km on Monday and 2.9 km on Tuesday. How much further did he run on Monday than on Tuesday? (4 marks)
Working:
3.75 - 2.9 = 3.75 - 2.90 = 0.85
Answer: 0.85 km
13. A bottle contains 1.25 litres of water. If Sarah drinks 0.4 litres, how much water is left in the bottle? (4 marks)
Working:
1.25 - 0.4 = 1.25 - 0.40 = 0.85
Answer: 0.85 litres
14. Tom bought 4 notebooks at $2.35 each. How much did he pay altogether? (3 marks)
Working:
4 × $2.35 = $9.40
Answer: $9.40
Marking Scheme Summary
| Section | Total Marks | Question Breakdown |
|---|---|---|
| A (MCQ) | 10 marks | 5 questions × 2 marks each |
| B (Short Answer) | 15 marks | 5 questions (3+3+3+3+3 marks) |
| C (Word Problems) | 15 marks | 4 questions (4+4+4+3 marks) |
| Total | 40 marks | 14 questions |
Topics Tested:
- Decimal comparison and ordering
- Decimal place value understanding
- Decimal-fraction conversions
- Decimal rounding
- Decimal addition and subtraction
- Real-world decimal applications
Key Learning Objectives:
- Compare and order decimals correctly
- Convert between fractions and decimals
- Perform decimal operations accurately
- Round decimals to specified places
- Apply decimal skills to word problems
- Understand decimal place value system