Let’s solve each problem one by one, step by step.
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Problem 1:
Kalash has 100 cm of wood. He saws it into two pieces. One piece is 52 cm long. How long is the other piece?
→ Total length = 100 cm
→ One piece = 52 cm
→ Other piece = 100 - 52 =
48 cm
✔ Check: 52 + 48 = 100 → Correct!
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Problem 2:
Julie buys 100 pouches of cat food. Her cat eats 35 pouches in a week. How many pouches will be left at the end of the week?
→ Start with 100 pouches
→ Cat eats 35
→ Left = 100 - 35 =
65 pouches
✔ Check: 65 + 35 = 100 → Correct!
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Problem 3:
Ewan buys a chocolate bar for 57p. He pays with £1. How much change does he get in pence?
→ £1 = 100 pence
→ Cost = 57p
→ Change = 100 - 57 =
43p
✔ Check: 57 + 43 = 100 → Correct!
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Problem 4:
Tim plans to run for 100 minutes. He pauses after 81 minutes. How many more minutes should Tim run for?
→ Total planned = 100 minutes
→ Already ran = 81 minutes
→ Still need to run = 100 - 81 =
19 minutes
✔ Check: 81 + 19 = 100 → Correct!
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Problem 5:
Huw needs 100 ml of milk in total. He only has 47 ml left in the fridge. How much more milk does he need?
→ Needs = 100 ml
→ Has = 47 ml
→ Needs more = 100 - 47 =
53 ml
✔ Check: 47 + 53 = 100 → Correct!
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Problem 6:
Nadeem’s cake mix weighs 100 g. It contains 25 g of butter and 60 g of flour. The rest is sugar. How much sugar does the cake mix contain?
→ Total weight = 100 g
→ Butter = 25 g
→ Flour = 60 g
→ So far: 25 + 60 = 85 g
→ Sugar = 100 - 85 =
15 g
✔ Check: 25 + 60 + 15 = 100 → Correct!
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Final Answer:
1. 48 cm
2. 65 pouches
3. 43 p
4. 19 minutes
5. 53 ml
6. 15 g
Parent Tip: Review the logic above to help your child master the concept of number bond addition word problem.
