9 ten + 1 ten = ____ tens
5
7
2
10
6 ten + ______ ten = 70.
1
3
1 ten + 1 ten = ____ tens.
11
_______ ten + ______ ten = 20.
1,1
2,1
1,3
2 tens =
20
15
12
10 tens are
100
50
+
80 + 10 = ___ tens
8
9
1 ten + 5 ten + ____ ten = 9 ten
4
One ten =
9 tens =
19
80
90