Addition
Add: 56 + 72
128
Subtract: 73-22
51
Round to the nearest ten: 56
60
Put the number 15 into 3 equal groups
3 groups of 5
5 x 3 = 15
Show a group for 4 + 4 + 4
3 x 4 = 12
Add: 37 + 93
130
Subtract: 62-37
25
Round to the nearest ten: 45
50
Put the number 12 into 4 equal groups.
4 x 3 = 12
Show a group for 3 + 3 + 3
3 groups of 3
3 x 3 = 9
Add: 144 + 162
306
Subtract: 187 - 142
45
Round to the nearest hundred: 123
100
Put the number 18 into 6 equal groups.
6 groups of 3
6 x 3 = 18
Show a group for 8 + 8 + 8
3 groups of 8
3 x 8 = 24
Add: 271 + 421
692
Subtract: 452 - 226
226
Round to the nearest hundred: 577
600
Put the number 20 into 4 equal groups
4 groups of 5
4 x 5 = 20
Show a group for 5 + 5 + 5 + 5 + 5 + 5
6 groups of 5
6 x 5 = 30
Add: 555 + 378
933
Subtract: 721 - 465
256
Round to the nearest ten: 468
470
Write a multiplication sentence for this problem: 2 groups of 6.
2 x 6 = 12
Challenge: show a group for 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10
10 groups of 10
10 x 10 = 100