Let’s solve each problem step by step.
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Problem 1: Express 3/8 as a decimal.
We divide 3 by 8.
8 goes into 3 zero times → write 0.
Add a decimal point and a zero → 30 divided by 8 is 3 (since 8×3=24), remainder 6.
Bring down another 0 → 60 divided by 8 is 7 (8×7=56), remainder 4.
Bring down another 0 → 40 divided by 8 is 5 exactly (8×5=40).
So, 3 8 = 0.375
✔ Check: 0.375 × 8 = 3 → correct.
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Problem 2: Express 9/16 as a decimal.
Divide 9 by 16.
16 goes into 9 zero times → 0.
Add decimal and zero → 90 ÷ 16 = 5 (16×5=80), remainder 10.
Bring down 0 → 100 ÷ 16 = 6 (16×6=96), remainder 4.
Bring down 0 → 40 ÷ 16 = 2 (16×2=32), remainder 8.
Bring down 0 → 80 ÷ 16 = 5 exactly.
So, 9 ÷ 16 = 0.5625
✔ Check: 0.5625 × 16 = 9 → correct.
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Problem 3: Express 13/25 as a decimal.
Divide 13 by 25.
25 goes into 13 zero times → 0.
Add decimal and zero → 130 ÷ 25 = 5 (25×5=125), remainder 5.
Bring down 0 → 50 ÷ 25 = 2 exactly.
So, 13 ÷ 25 = 0.52
✔ Check: 0.52 × 25 = 13 → correct.
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Final Answer:
1. 0.375
2. 0.5625
3. 0.52
Parent Tip: Review the logic above to help your child master the concept of singapore math worksheet grade 3.
