Grade 2 · Math · Lesson 15

Subtract with Borrowing

When the top ones digit is smaller than the bottom ones digit, you cannot subtract yet. You need to borrow a ten from the tens column to make the ones large enough.

What this lesson teaches

1Subtract two 2-digit numbers that require borrowing
2Cross out the tens digit, reduce it by 1
3Add 10 to the ones column
4Identify subtractions that do not require borrowing

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