Next Benchmark
29
30
The rug
meter stick
24-9
15
23+9
32
Find the difference between 21 and 19
3
36
40
A crayon
10 cm ruler
35-7
28
38+6
44
Find the difference between 45 and 39
6
75
80
A water bottle
measuring tape
63-7
56
65+9
74
Find the difference between 58 and 49
9
81
90
The height of the classroom
meter stick
72-18
54
77+16
93
Find the difference between 72 and 58
14
92
100
A squishmallow
measuring tape
98-25
73
68+29
97
Find the difference between 98 and 73
25