Level 1
Subtracting 8
20 - 8 = _____
1 m
Level 1
Subtracting 9
20 - 9 = _____
1 m
Level 1
Subtracting 10
20 - 10 = _____
1 m
Level 1
Subtraction within 10
10 - 1 = _____
2 m
Level 1
Subtraction within 20 without regrouping
20 - 1 = _____
1 m