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Published byKatherine Sherin Modified over 3 years ago

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Think! What different methods can you use to work out multiplication sums? Sometimes we dont know the answer to a multiplication question…

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So 6 x 4 = 4 + 4 + 4 + 4 + 4 + 4 4 x 6 = 6 + 6 + 6 + 6 One way of tackling a multiplication question is by using repeated addition… +4 +6

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So 3 x 9 = OR 9 x 3 = What repeated addition sums could you do to work out this multiplication sum? Have a go on your whiteboard using a number line.

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X-Factor Gift Shop Members of the audience have been spending lots of money in the X-Factor gift shop. Use repeated addition to solve these multiplication problems.

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X-Factor Gift Shop 8 people buy 4 t-shirts each. How many t-shirts do they buy altogether? What multiplication sum are you going to do? What repeated addition sum will you do?

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X-Factor Gift Shop 9 people buy 6 mugs each. How many mugs do they buy altogether? What multiplication sum are you going to do? What repeated addition sum will you do?

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X-Factor Gift Shop 7 people buy 4 CDs each. How many CDs do they buy altogether? What multiplication sum are you going to do? What repeated addition sum will you do?

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X-Factor Gift Shop 9 people buy 8 pens each. How many pens do they buy altogether? What multiplication sum are you going to do? What repeated addition sum will you do?

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Ex4x6=6+6+6+6 +6 06121824 1.3x8=8+8+8 2.4x6= Multiplying by repeated addition

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Now it is your turn!

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Solving equations by multiplying or dividing. 8X = -128 88 X = -16.

Solving equations by multiplying or dividing. 8X = -128 88 X = -16.

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