Division Using multiplication and repeated subtraction

What’s It All About? You are going to learn: How to divide by inversing multiplication and using repeated subtraction. What skills should you have already? You need to be able to multiply and subtract two values using a written method.

Remember that 6 ÷ 3 means “how many threes make 6?” Division is the INVERSE of Multiplication. There are different ways of showing division. 6 ÷ 3 The answer is the same in all three cases! Division

For multiplying, we can use a grid like this: We can now use it to divide as well as multiply. Example: 20  4 means “How many 4’s make 20?” Using Multiplying to Divide The answer is 5.

Remember that 6 ÷ 3 means “how many threes make 6?” Work out: ÷ ÷ ÷ ÷ ÷ ÷ ÷ 7 Your Turn

Work out £192 ÷ 6 Set up the method: Multiply 6 by something easy such as 10 or 100, then subtract. Repeat this until you have nothing left or the number that is left is less than 6. Stop. Total up the 6’s. 10 Repeated Subtraction £192  6 = 32

Work out £324 ÷ 12 Set up the method: Multiply 12 by something easy such as 10 or 100, then subtract. Repeat this until you have nothing left or the number that is left is less than 12. Stop. Total up the 12’s. 10 Repeated Subtraction £324  12 = 27

Work out £3010 ÷ 14 Set up the method: Multiply 14 by something easy such as 10 or 100, then subtract. Repeat this until you have nothing left or the number that is left is less than 14. Stop. Total up the 14’s. 100 Repeated Subtraction £3010  14 = 215 Choosing sensible numbers reduces the amount of subtracting you have to do....

Remember that 6 ÷ 3 means “how many threes make 6?” Work out: ÷ ÷ ÷ ÷ 9 Your Turn ÷ ÷ ÷ ÷ 14

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