# Mathematics

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Kari is 10 years old. her sister is half her age. Explain why 10 x 1/2 can be used to find her sisters age?

• Mathematics -

10/1 * 1/2 = 10/2 = 5

• Mathematics -

Do you know why this method would be used?

• Mathematics -

Because to find half of ten, you need to multiply 10/1 * 1/2

• Mathematics -

An 8-years-old boy is half his sister's age. when the boy is 1w. How old will his sister be?

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