# Subtracting Two-digit Numbers

## Mathematics, Grade 3

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tens ones tens ones tens ones tens ones tens ones Number Line Subtracting with Regrouping Place 32 blocks in the tens and ones columns. 1. 1 ten = 10 ones 34 13 = ? 32 7 = ? Regroup Counting Back tens ones 3 2 7 Regroup 1 ten as 10 ones. 2. 3 2 2 12 7 tens ones 3 2 2 12 7 5 3 2 2 12 7 5 2 difference 3 1 4 2 1 3 Subtract the ones. 3. Subtract the tens. When subtracting 1, 2, or more from a number, you can subtract by counting back. 4. 0 1 2 3 4 5 6 7 8 9 10 tens ones tens ones tens ones tens ones tens ones Example: 6 2 = 4 Subtracting without Regrouping © Copyright NewPath Learning. All Rights Reserved. 93-4202 www.newpathlearning.com Subtracting Two-digit Numbers
\|xiBAHBDy01628rzu tens ones tens ones tens ones tens ones tens ones Key Vocabulary Terms count back regroup difference subtract number line tens ones Subtracting with Regrouping Place 32 blocks in the tens and ones columns. 1. 1 ten = 34 13 = ? 32 7 = ? Regroup tens ones 3 2 7 Regroup 1 as . 2. 3 2 7 tens ones 3 2 7 3 2 7 5 2 difference 3 1 4 3 Subtract the ones . 3. Subtract the tens . 4. tens ones tens ones tens ones tens ones tens ones Subtracting without Regrouping Number Line Counting Back When subtracting 1, 2, or more from a number, you can subtract by counting back. 0 1 2 3 4 5 6 7 8 9 10 Example: 6 2 = 4 © Copyright NewPath Learning. All Rights Reserved. 93-4202 www.newpathlearning.com Subtracting Two-digit Numbers