Launched by the Metropolitan Police in 2012, the Gangs Matrix is a database of suspected gang members in London. © Amnesty International Launched by the Metropolitan ...

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Multiplication is working out how many groups of something you have altogether. Division is working how many you get, after sharing a number between another number. You can use place value charts to ...

When you are doing division, it's helpful to use a written method. This can be especially useful if the numbers get too big to calculate in your head. If the number you are dividing by (this is called ...