About this worksheet
Subtract the smaller number from the larger, borrowing when a digit is too small.
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Column addition with carrying.
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Counting backwards, and addition as its inverse.
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Recognizing when the top digit is smaller than the bottom one.
With mastery, the student can
- Line up numbers by place value and subtract column by column from the right.
- Borrow ten from the next column, crossing out as you go.
- Handle borrows that ripple across consecutive zeros — the hardest case.