Two-Digit Subtraction

Front

What is two-digit subtraction?

Back

Two-digit subtraction is the process of subtracting one two-digit number from another two-digit number.

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the first step in solving a two-digit subtraction problem?

Back

The first step is to align the numbers vertically by their place values (tens and units).

Tags

CCSS.2.NBT.B.7

Front

How do you borrow in two-digit subtraction?

Back

If the top digit in a column is smaller than the bottom digit, you borrow 1 from the next left column, which adds 10 to the current column.

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CCSS.5.NBT.B.7

Front

What is the difference between 93 and 67?

Back

The difference is 26.

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference between 82 and 24?

Back

The difference is 58.

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference between 92 and 43?

Back

The difference is 49.

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference between 90 and 34?

Back

The difference is 56.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the importance of place value in subtraction?

Back

Place value helps in correctly aligning numbers and understanding which digits to subtract from each other.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is a common mistake made in two-digit subtraction?

Back

A common mistake is not borrowing correctly when the top digit is smaller than the bottom digit.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How can you check your subtraction answer?

Back

You can check your answer by adding the difference to the smaller number to see if it equals the larger number.

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CCSS.1.OA.A.1