Subtract within 20 using 10 frames

This video tutorial teaches subtraction within 20 using ten frames. It begins by defining subtraction as taking away, removing, or comparing numbers. The video explains the use of ten frames as a visual tool to help group numbers for addition and subtraction. It addresses a common misunderstanding that subtraction is not commutative, unlike addition. The tutorial provides examples of subtracting 16 minus 7 and 13 minus 5 using ten frames, demonstrating how to decompose numbers to simplify subtraction. The lesson concludes by reinforcing the concept of using ten frames for subtraction.

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