SG Exam Hub

Primary 5 · Mathematics · Decimals

Decimals questions for Primary 5 Maths

10 questions to work through online. Answer and you get the working straight away, then a score at the end. No sign-up, and you can retake it as often as you like.

  • Multiplying decimals
  • Dividing decimals
  • Fraction to decimal
  • Multiplying by 10, 100, 1000
  • Dividing by 10, 100, 1000
  • Decimal word problem
  • Rounding decimals
  • Subtracting decimals
  • Comparing decimals
  • Dividing in context
0 of 10 answered
Question 1 of 10Multiplying decimals
3.6 × 4 = ?
Question 2 of 10Dividing decimals
8.4 ÷ 7 = ?
Question 3 of 10Fraction to decimal
Write 7/8 as a decimal.
Question 4 of 10Multiplying by 10, 100, 1000
4.06 × 100 = ?
Question 5 of 10Dividing by 10, 100, 1000
23.5 ÷ 100 = ?
Question 6 of 10Decimal word problem
A ribbon costs $2.45 per metre. What is the cost of 6 metres?
Question 7 of 10Rounding decimals
Round 5.748 to 2 decimal places.
Question 8 of 10Subtracting decimals
A tank held 10 litres of water. 3.675 litres leaked out. How much water was left?
Question 9 of 10Comparing decimals
Which of these is the smallest?
Question 10 of 10Dividing in context
A 10 kg bag of flour is packed into 1.25 kg packets. How many packets are filled?
Answers and explanations for all 10 questions

Every answer with the reasoning behind it. Worth reading after you have tried the set — or on its own, if you are a parent marking it.

  1. 3.6 × 4 = ?

    Answer: 14.4

    3.6 × 4 = 14.4.

  2. 8.4 ÷ 7 = ?

    Answer: 1.2

    8.4 ÷ 7 = 1.2.

  3. Write 7/8 as a decimal.

    Answer: 0.875

    7 ÷ 8 = 0.875.

  4. 4.06 × 100 = ?

    Answer: 406

    Multiplying by 100 moves every digit two places left: 4.06 × 100 = 406.

  5. 23.5 ÷ 100 = ?

    Answer: 0.235

    Dividing by 100 moves every digit two places right: 23.5 ÷ 100 = 0.235.

  6. A ribbon costs $2.45 per metre. What is the cost of 6 metres?

    Answer: $14.70

    6 × $2.45 = $14.70.

  7. Round 5.748 to 2 decimal places.

    Answer: 5.75

    The thousandths digit is 8, so 5.748 rounds up to 5.75.

  8. A tank held 10 litres of water. 3.675 litres leaked out. How much water was left?

    Answer: 6.325 ℓ

    10 − 3.675 = 6.325 ℓ.

  9. Which of these is the smallest?

    Answer: 3.07

    Compare tenths first: 3.07 has 0 tenths, which beats 1 tenth and 7 tenths.

  10. A 10 kg bag of flour is packed into 1.25 kg packets. How many packets are filled?

    Answer: 8

    10 ÷ 1.25 = 8 packets.