Expressions
Is this an expression or equation?
n+6
Expression
1,286,263
+4,000,000
5,286,263
100
39
+ 11
150
What is this property?
10 + 0 = 10
Identity
384+712
1,100
What is the value of n?
n+1=3
2
86,413,589
+ 3,173,400
89,586,989
511
422
+86
1,019
What is this property?
368 + 82 = 82 + 368
Commutative
1,342 + 1,890
3,000
What is the value of n?
n + n = 20
10
86,197,508
+41,486,203
127,683,711
1,567
328
+ 271
2,166
What is this property?
(6 + 2) + 4 = (6 + 4) + 2
Associative
3,627 + 211
3,800
What is the value of n?
3 x n = 27
9
142,865,412
+375,671,038
518,536,450
72,811
56,190
+ 3,862
132,863
Use the Commutative property to fill in the blank
62 + 40 = ____ + ____
62 + 40 = 40 + 62
Name all three steps for estimating
1. Find the largest shared place
2. Round to the largest shared place
3. Add the new numbers
What is the value of n?
72+n=122
50
807,862,193
+253,485,397
1,061,347,590
157,234
579,333
+43,138
779,705
Write an example of the associative property
Mr. Gonder will approve or disapprove of all answers
43,802 + 9,999
54,000