Commutative Property
What is Commutative Property?
The idea that order doesn't matter when adding numbers together
What is 12+25?
37
What comes next in the following pattern?
10, 20, 30, 40, ___
50
What is 4+8+7?
19
What is digit?
numbers or number alphabet
What is the Commutitive Property of
8+5=13
5+8=15
What is 63+34?
97
What comes next in the following pattern?
38, 48, 58, 68, ___
78
What is 47+7+9?
63
What is value?
Worth
What is the Commutative Property of
37+85=122
85+37=122
Solve this using a number line
83+13
Have students show boards
How many groups of ten are in 37?
3
What is 37+52+8?
97
What is the value of the 6 in 64?
60 or 6 tens
What is the Commutative Property of
73+27+6=106
Acceptable answers:
27+73+6=106
27+6+73=106
73+6+27=106
6+73+27=106
6+27+73=106
Solve this by making a group of 10
74+19
Have students show their board
How many groups of 10 are in 573?
7
What is 73+14+2?
89
What is the value of the 7 in 735?
700 or 7 hundreds
What goes in the blank?
23+62=85
62+____=85
23
Solve this problem any way you like.
64+23
Have students show their boards
How many groups of 10 are in 306?
0
Show one way you can solve this problem. Be sure that you can explain your thinking.
72+24+4
The answer is 100.
If students can correctly explain their thinking then they get the points.
What is the value of the 0 in 620?
0 or 0 ones