Short multiplication method. How to multiply a number by a single digit number using short multiplication.

Short multiplication is one of the easiest methods to use when multiplying a number by a single digit number. All you need to do is work from right to left and multiply each digit in your number by the number you are multiplying by. It’s easier to see this by looking at a couple of examples.

Example 1

Use short multiplication to work out 463 × 8.

Firstly, work 3 × 8. This gives 24. Put the 4 answer on the answer line, and put the 2 under the answer line in the tens column.

Next work out 6 × 8 and add on the 2 that you carried into this column. This gives 50. Put the 0 on the answer line, and put the 5 under the answer line in the hundreds column.

Finally work out 4 × 8 and add on the 5 that you carried into this column. This gives 37. Put both of these digits on the answer line as there are no more numbers to multiply.

So your final answer is 3704.

The method can be applied to larger numbers with little more effort.

Example 2

Use short multiplication to work out 6481 × 9.

Firstly, work 1 × 9. This gives 9. Put the 9 answer on the answer line.

Next, work out 8 × 9. This gives 72. Put the 2 on the answer line, and put the 7 under the answer line in the hundreds column.

Next work out 4 × 9 and add on the 7 that you carried into this column. This gives 43. Put the 3 on the answer line, and put the 4 under the answer line in the thousands column.

Finally, work out 6 × 9 and add on the 4 that you carried into this column. This gives 58. Put both of these digits on the answer line as there are no more digits to multiply.

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1 comment

nayeem 3 years ago

thnx

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