Missing Addend
Which Property is Being Used?
Find the Sum
Rounding
Find the ESTIMATED SUM
100
What is the missing addend? 4 + __ = 14
10
100
10 + 4 = 14 4 + 10 = 14
Commutative Property
100
54 + 63
117
100
Round 57 to the nearest ten
60
100
56 + 22
80
200
__ + 6 = 15
8
200
7 + (3 + 2) and (7 + 3) + 2
Associative Property
200
649 + 507 =
1,156
200
Round 23 to the nearest 10
20
200
639 + 43
680
300
14 + 17 = __ + 14
17
300
5 + 6 and 6 + 5
Commutative
300
7 + (3 + 12) and (7 + 3) + 12
22 and 22
300
Round 638 to the nearest 10
640
300
815 + 367 =
1,190
400
3 + 11 = 11 + __
3
400
5 + 0 = 5 and 0 + 5 = 5
Identity Property
400
(60 + 13) + 22
95
400
Round 441 to the nearest 10
440
400
296 + 453 =
750
500
18 + 3 = __ + 18
3
500
14 + 0 = 14 and 0 + 14 = 14
Identity
500
53,842 + 35, 804 =
89,646
500
816 to the nearest ten
820
500
616 + 389
1,010
M
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