Copy and complete. (a)
1
(b)
(c)
46 + 20 = 46 + 23 = 146 + 23 = 146 + 33 =
25 + 60 = 25 + 64 = 325 + 64 = 325 + 74 =
31 + 40 = 31 + 46 = 431 + 46 = 531 + 56 =
2 Use estimates and reasoning to help find the correct solution each time. (a) 237 + 40 = 278 237 + 40 = 277 (b) 325 + 64 = 389 325 + 64 = 489 (c) 406 + 83 = 489 406 + 83 = 499 (d) 544 + 53 = 697 544 + 53 = 597
3 Winston has 465 cents to spend at the fair. Riana has 30 cents more. How much does Riana have? cents
E
represents a 2-digit multiple of 10
Find all the possible values of
and
362
42
9781380050687__text.indb 42
03/05/2022 10:18
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