Number Bonds

A lot of repetition can be needed to achieve a secure knowledge of the number bonds for 10, 20 and 100. Using empty box questions can reinforce the link between addition and subtraction as the inverse of each other.

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Name of child/group (optional)
Types of questions

Bonds for 10
Bonds for 20
Bonds for 100
 Allow reversed questions
 Allow empty box questions in subtraction