# Maths worksheet: Standard written multiplication 3-digits by 1 digit

This worksheet uses the standard or efficient method recommended by the Primary Framework for Maths to multiply a 3-digit number by a single digit. There are other methods equally good, but it is important that children keep to one method that they become confident with. It presumes a good knowledge of tables before starting.

For example: 436 x 7.

First, do an estimate of the answer.

436 x 7 is approximately 400 x 7 which is 2800. The answer will be over 2800.

Then set the sum out in a vertical layout:

436

x 7

Start with the units.

6 x 7 is 42. Put the 2 in the units and carry the 4 tens into the tens column, under the answer line.

Then multiply the tens.

3 (tens) x 7 is 21(tens). Add the 4 (tens). to make 25(tens).

Place the 5 in the tens column and carry the 2 (hundreds) into the hundreds column.

Finally the hundreds.

4 (hundreds) x 7 is 28 (hundreds). Add the 2 (hundreds) to make 30 (hundreds).

Place the zero in the hundreds column and the 3 in the thousands column.

The answer is 3052.

A clearer layout of this is available on the worksheet explanation.

Further written multiplication worksheets can be found in the Year 5 and Year 6 Calculations sections.

Standard written multiplication: 3-digits by 1-digit

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