Addition
8 + 5 =
13
5 tens + 5 tens
15-14
11
2, 4, 6, 8, 10, ____
12
16+6=
22
12+ 6 =
18
2 hundred - 5 tens
150
5 tens- 4 tens
10
5, 10, 15, _____
20
8 + 9 =
17
5+5=
10
When counting by tens, what comes after 80?
90
150 - 60
90
3, 6, 9, 12, ____
15
12 + 8 =
20
6+6=
12
64
27 - 9
18
4, 8, 12, ____
16
13 - 5 =
8
7+8=
15
5 hundreds + 5 hundreds
70-30 =
40
10, 20, 30, 40, 50, ____
60
13 + 8 =
21