Page 34 - STEPS MATHEMATICS 4A

Setting out sums

Callum and Azara have favourite ways of adding.

100 + 500

146 40+ 80
+ 581 6+ 1
7 (6 + 1)
120 (40 + 80)
600 (100 + 500)
727

Find the sum of these in your favourite way.
a 256 + 550 b 453 + 339 c 780 + 125

d 328 + 345 e 169 + 772 f 608 + 259
Remember to think,
[The answer will be
about ...' first.
Use addition to find the numbers
which are double these.

a 437 b 166 c 396
d 275 e 358 f 409

CHALLENGE
247

impossible
more
:erent totals

True or false? Decide how to find out if Lucy is correct.
V