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Written Multiplication of Three-Digit Numbers by One-Digit

In this worksheet, students must carry out formal written multiplications of three-digit numbers by single-digit numbers. Carrying is involved.

'Written Multiplication of Three-Digit Numbers by One-Digit' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Multiplication and Division

Curriculum subtopic:   Use Written Form for Multiplication

Difficulty level:  

Worksheet Overview

Written multiplication can be done step-by-step by setting out the calculation carefully and remembering to regroup if necessary.

 

Example

Work out

947 × 7

 

Answer

1. Rewrite the calculation vertically, like this:

947 x 7

2. Then multiply the numbers in the ones column together, so 7 × 7 = 49

Write the 9 in the ones column and regroup the 4 tens below in the tens column.

947 x 7 ones

 

3. Next multiply the numbers in the tens column together, so 4 × 7 = 28 and add the 4 tens that were regrouped.

947 x 7 tens

 

This gives us 28 + 4 = 32 , so we write the 2 in the tens column and regroup the 3 hundreds below in the hundreds column.

947 x 7 hundreds

 

4. Lastly, multiply the numbers in the hundreds column, so 9 × 7 = 63 and add the 3 that was regrouped.

This gives us 63 + 3 = 66 in the thousands.

947 x 7 thousands

 

So, in full, we have:

947 x 7 answer

 

So      947 × 7 = 6629

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