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Subtraction

Level 21 / mastery

4d - 3d (no borrow)

5 visual steps / visible-place subtraction

1. Release thousands

1. Release thousandsRelease one digit; only borrow stays active.
answer strip
6 - 0 = 6; drop 6.

6 - 0 = 6; drop 6.

2. Release hundreds

2. Release hundredsRelease one digit; only borrow stays active.
answer strip
8 - 5 = 3; drop 3.

8 - 5 = 3; drop 3.

3. Release tens

3. Release tensRelease one digit; only borrow stays active.
answer strip
4 - 3 = 1; drop 1.

4 - 3 = 1; drop 1.

4. Release ones

4. Release onesRelease one digit; only borrow stays active.
answer strip
2 - 1 = 1; drop 1.

2 - 1 = 1; drop 1.

5. Read answer

5. Read answerRelease one digit; only borrow stays active.Read answerDrop finished digits; borrow is gone.
Read 6 | 3 | 1 | 1 as 6311; borrow is gone.

Read 6 | 3 | 1 | 1 as 6311; borrow is gone.

Practice Level 21

A few quick rounds make each dropped digit feel light; borrow is the only thing to keep.

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