This understanding involves subtracting a multiple of 10 from a whole number, typically within 1,000, by interpreting the operation as removing a specified number of tens while preserving the ones value. Place-value reasoning supports mentally adjusting the tens and, when necessary, regrouping across a hundred (for example, 462 − 70 = 392), rather than treating the digits as isolated symbols; work with larger numbers or more general subtraction algorithms is outside this scope.
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Detailed Explanation: Subtract multiples of 10 mentally
To subtract a multiple of , think about removing tens. The ones digit usually stays the same.
Example:
- is tens, so subtract from the tens in .
- The number has tens. Since tens is not enough to remove tens, regroup hundred as tens:
- becomes hundreds, tens, and ones.
- Subtract tens from tens:
- Keep the ones. Now there are hundreds, tens, and ones:
So, .
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Subtraction - Whole Number - Subtract Multiple of 10 from a Number
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Download/Modify Free Grade 3 'Subtract multiples of 10 mentally' Worksheet
Print this free 'Subtract multiples of 10 mentally' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Subtraction - Whole Number - Subtract Multiple of 10 from a Number
- Subtraction - Whole Number - Subtract Multiple of 10 from a Number - Columns
- Subtraction - Whole Number - Subtract Multiples of 10
- Subtraction - Whole Number - Subtract Multiples of 10 - Columns
- Subtraction - Whole Number - Subtract 10 from a Number
- Subtraction - Whole Number - Subtract 10 from a Number - Columns
- Base 10 Blocks - Subtracting - Picture to Answer, No Borrow - Hundreds and Tens
- Base 10 Blocks - Subtracting - Picture (Cross-out) to Equation, No Borrow - Hundreds and Tens
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