Page 32 - STEPS MATHEMATICS 4A

Mental addition

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8 + 7 = 15 = 10 + 5 60 + 50 = 110 100 + 10

1 Write these in the same way. £I Now write these.

a 7 + 7 = b 9 + 6 = a 60 + 70= b 90 + 80
c 9 + 4 = d 5 + 8 = C 50 + 60= d 50 + 70
e 8 + 8 = f 9 + 8 = e 90 + 20 = f 80 + 50

This number balance shows This number balance shows
the same information. the same information.

Design 2 number balances 4 Design 2 number balances
for each of these. for each of these.

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