### Questions

Complete these exercises using the mental strategies you have learned. Using a calculator will not help you develop these skills.

#### Question 1

Multiply these numbers by 9 by multiplying by 10 and taking one of the number away.

a | |||
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b | |||

c | |||

d | |||

e | |||

f |

#### Question 2

Multiply these numbers by 11 by multiplying by 10 and adding one of the number.

a | |||
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b | |||

c | |||

d | |||

e | |||

f |

#### Question 3

Multiply these numbers by 5. Choose the best multiplying by 5 strategy.

a | |||
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b | |||

c | |||

d | |||

e | |||

f |

#### Question 4

Multiply these numbers by 6 by multiplying by 2 and then by 3 or vice versa.

a | |||
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b | |||

c | |||

d |

#### Question 5

Halve and double to solve these multiplications.

a | |||
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b | |||

c | |||

d |