Compensation
Solve using compensation.
11+13=?
24
Solve using place value blocks.
14+5=?
19
Solve using partial sums.
21+16=?
37
Solve using break apart strategy.
16+12=?
28
Use any strategy to solve.
16+9+4
29
Solve using compensation.
12+15=?
27
Solve using place value blocks.
28+16=?
44
Solve using partial sums.
28+23
41
Solve using break apart strategy.
18+16=?
34
Use any strategy to solve.
18+21+7+5
51
Solve using compensation.
27+18=?
45
Solve using place value blocks.
37+24=?
61
Solve using partial sums.
36+26=?
62
Solve using break apart strategy.
28+35=?
63
Use any strategy to solve.
13+26+21+18=?
78
Solve using compensation.
32+26=?
58
Solve using place value blocks.
57+19=?
76
Solve using partial sums.
48+29
77
Solve using break apart strategy.
38+44=?
82
Use any strategy to solve.
36+36+12+8
92
Solve using compensation.
49+34=?
73
Solve using place value blocks.
46+35=?
81
Solve using partial sums.
53+38
91
Solve using break apart strategy.
57+36
93
Use any strategy to solve.
45+44
89