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Subtraction

Level 16 / build-up

3d - 3d (no borrow)

4 visual steps / visible-place subtraction

1. Release hundreds

1. Release hundredsRelease one digit; only borrow stays active.
answer strip
8 - 2 = 6; drop 6.

8 - 2 = 6; drop 6.

2. Release tens

2. Release tensRelease one digit; only borrow stays active.
answer strip
6 - 3 = 3; drop 3.

6 - 3 = 3; drop 3.

3. Release ones

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

4 - 1 = 3; drop 3.

4. Read answer

4. Read answerRelease one digit; only borrow stays active.Read answerDrop finished digits; borrow is gone.
Read 6 | 3 | 3 as 633; borrow is gone.

Read 6 | 3 | 3 as 633; borrow is gone.

Practice Level 16

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

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