Number lines
Use a number line to solve:
5-3=?

5-3=2
2+2
4
Use a 10 frame to solve:
10-2=?
8
3,2,5
3+2=5
2+3=5
5-2=3
5-3=2
2+1=5
False
Use a number line to solve:
10-6=?

10-6=4
5+5
10
Use a 10 frame to solve:
12-5=?
7
7,3,10
7+3=10
3+7=10
10-3=7
10-7=3
10+3=13
True
Use a number line to solve:
17-5=?

17-5=12
6+6
12
Use a 10 frame to solve:
17-6=?
11
10,5,15
10+5=15
5+10=15
15-5=10
15-10=5
11+7=18
True
Use a number line to solve:
24-8=?

24-8=16
8+8
16
Use a 10 frame to solve:
19-10=?
9
3,17,20
3+17=20
17+3=20
20-3=17
20-17=3
15+6=19
False
Use a number line to solve:
20-11=?

20-11=9
12+12
24
22-5=?
17
23,7,30
23+7=30
7+23=30
30-7=23
30-23=7
27+9=
34