What symbol is it?
Equals
What number is it?
20
What symbol is it?
Plus
839 - How many tens?
3 Tens
9 Tens
What symbol is it?
Minus
45 + 5=
50
What number is it?
83
30 + 8=
38
56 - How many ones?
5 ones
6 ones
What number is it?
100
782 - How many hundreds?
12 hundreds
7 hundreds
What number is it?
16
72 + 2 =
74
10-7 =
3
What number is it?
52
What number is it?
145
18+5=
23