Addition Properties
Identity Property
Estimate by rounding to the highest COMMON place value and adding.
46 + 21 = __________
50 + 20 = 70
Find the pattern
375, 475, 575, 675
+100
367 + 150
517
953 - 212
741
the property that states you can switch the numbers and get the same sum
commutative property
Estimate by rounding to the highest COMMON place value and adding.
587 + 364 = __________
600 + 400 = 1,000
Find the pattern
999/ 1,009/ 1,019/ 1,029
+10
1,976 + 243
2,219
542 - 238
304
the property that states that no matter how you group the addends, you get the same sum
associative property
Estimate by rounding to the highest COMMON place value and adding.
293 + 67 = __________
290 + 70 = 360
Find the pattern
761, 766, 771, 776
+5
6,386 + 1,297
7,683
607 - 534
73
Name the property:
54 + 31 = 31 + 54
commutative property
Estimate by rounding to the highest COMMON place value and adding.
386 + 53 = __________
390 + 50 = 440
Find the pattern
1,346/ 1,446/ 1,546/ 1,646
+100
10,234 + 12,462
23,696
8,070- 707
7,363
Name the Property:
6 + (3 + 2) = (6 + 3) + 2
associative property
Estimate by rounding to the highest COMMON place value and adding.
4,782 + 321 = __________
4,800 + 300 = 5,100
Find the pattern
238, 240, 242, 244
+2
72,531 + 13,645
86,176
60,000 - 8,257
51,742