Addition Properties
Find the sum and identify the addition property.
(2+5) +8=
2+ (5+8) =
15, Associative Property
What number is 1 more than 972?
973
Estimate. Round each addend to the indicated place value.
34+23; tens
50
759+19
778
6,499+543
7,042
Find the sum and identify the addition property.
2+8 =
8+2=
10, Commutative Property
What number is 10 more than 310?
320
Estimate. Round each addend to the indicated place value.
636+27; Tens
670
445+26
471
1,998+300
2,298
Find the sum and identify the addition property.
100 +0 =
100, Identity
What number is 1,000 more than 8,993?
9,993
Estimate. Round each addend to the indicated place value.
687+231; Hundreds
900
345+93
438
2,503+2,899
5,402
Find the sum and identify the addition property.
6+5=
5+6 =
11, Commutative
What number is 100 more than 173?
273
Estimate. Round each addend to the indicated place value.
1,624+334; Hundreds
1,900
228+149
377
8,285+ 1,456
9,741
Find the sum and identify the addition property.
(5+7) +3 =
5 + (7+3) =
15, Associative
Identify and complete the number pattern.
6,282; 7,282; _______; 9,282
8,282, add 1,000
Estimate. Round each addend to the indicated place value.
4,412+1,204; Hundreds
5.600
231+596
827
2,390+3,490
5,880