Year 2 maths · E.4 · Add and Subtract to 100
Subtract tens
Think of tens as single objects: 5 tens − 2 tens = 3 tens.
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Chen asks: 100 − 70 =
Answer: 30
Pia says: 100 − 40 =
Answer: 60
Pia asks: 100 − 20 =
Answer: 80
Tip: Think of tens as single objects: 5 tens − 2 tens = 3 tens.
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