Numbers: Getting to grips with division
Numbers: Getting to grips with division

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Numbers: Getting to grips with division

15 Appendix: multiplication tables

If you want to be able to do division without using a calculator, you need to know by heart what you get if you multiply any two numbers up to 10. All the possible combinations can be shown in a multiplication table (also called a times table), like the one below.

Described image
Figure 37

Say you want to multiply 6 by 8. Look along the top row for the ‘6’ column. Look down the leftmost column for the ‘8’ row. The answer is shown where the ‘8’ row meets the ‘6’ column – so in this case the answer is 48.

In other words, the top row shows one of the numbers you want to multiply. The leftmost column shows the number you want to multiply it with. The result of the multiplication is shown where the row and column cross.

Notice that it doesn’t make any difference which way round you choose your row and column. Because 6 x 8 is the same as 8 x 6, the intersection between row 6 and column 8 is the same as the intersection between row 8 and column 6.

If you want to, you can use this table to practise remembering all the possible combinations. There is also an interactive version of a multiplication table on the Multiply page [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] of the Numbers website, which you might find helpful.

To help you remember you can do some practice calculations if you want by going to one of the following websites:

  1. The Practice sums page of the Numbers website. Select Times tables from the pull-down list next to Type of sum. Choose which number you want to practice multiplying by from the pull-down list next to Times table. Then follow the instructions on the page.
  2. The Basic Math page of the website. Select Multiply under 1. Choose an operation. Under 2. Choose numbers from 0 to 12, choose the highest and lowest numbers you want to multiply by, then click on Go.

Both of these websites can also give you practice in addition, subtraction or division if you want – just select the appropriate option from the Type of sum or 1. Choose an operation menu.


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