Mr Chan's Subtraction Exercise Generator

https://www.zeongogo.com/maths/sub/

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Min digits: Max digits:
Borrows are the same as exchanges, as in 71 - 3. The Ruler Method or Pizza Take-Away method is strongly recommended.
Min borrows: Max borrows:
Zero-borrows are borrows that pass through zeros, as in 1002 - 3. Special techniques help. Ask if unsure.
Min zero-borrows: Max zero-borrows:
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