Subtraction Strategies to 20

About Subtraction Strategies to 20

This free first grade practice teaches smart ways to subtract within 20. Kids use ten frames, number lines, counting back, counting on, and making ten.

There are 3 levels of 10 questions. Every question reads aloud, a hint appears after two misses, and kids earn up to 3 stars.

Skills Practiced

• Subtract with ten frames and number lines
• Count back and count on to subtract
• Subtract to and from 10
• Use ten and doubles to subtract
• Relate addition and subtraction facts