add
18 + 4
22
12 - 5
7
how many tens are in 30
3
73
80 - 8
72
how many ones are in 80
0
60 + 36
96
22 - 12
10
how many hundreds in 234
2
40 + __ = 51
11
13 - 7
6
what number is in the ones place in 657
7
105 + __ = 120
15
50 - 7
43
what place is the 4 in in 24?
A: Ones
B: tens
C: Hundreds
D: none
a