10_QQ_powerpoint_'I_think_of_a_number'

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Ten quick questions I think of a number…… Solving equations

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2: 2 4: 8 1: 3 3: 7 I think of a number…. I multiply by 3 then add 2. I get 23 What is my number? 1

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2 2: 5 4: 13 1: 3 3: 6 I think of a number…. I multiply by 5 then take 2 . I get 13 What is my number?

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3 2: 5 4: 17 1: 15 3: 10 I think of a number…. I divide it by 5 then add 7. I get 10 What is my number?

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4 2: 2 4: 11 1: 44 3: 6 I think of a number…. I double it then take 5. I get 17 What is my number?

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5 2: 27 4: 2 1: 6 3: 8 I think of a number…. I add 3 then times by 5. I get 25 What is my number?

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6 2: 12 4: 6 1: 3 3: 9 I think of a number…. I subtract 3 then divide by 3. I get 3 What is my number?

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7 2: 43 4: 3 1: 52 3: 7 I think of a number…. I multiply by 10 then take 2. I get 28 What is my number?

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8 2: 70 4: 22 1: 10 3: 100 I think of a number…. I divide by 10 then minus 12. I get -2 What is my number?

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9 2: 23 4: 2 1: 17 3: 5 I think of a number…. I add by 3 then divided by 2. I get 10 What is my number?

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10 2: 50 4: 15 1: 52 3: 29 I think of a number…. I halve it then add 2. I get 27 What is my number?

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