6.2 Multiplicative Comparisons

Front

What is a multiplicative comparison?

Back

A multiplicative comparison is when you compare two quantities by showing how many times one quantity is as much as the other.

Front

If Amanda's sister is 6 years old and her dad is 7 times older, how do you find her dad's age?

Back

You multiply Amanda's sister's age by 7: 6 x 7 = 42 years old.

Front

Sally washes her hands for 10 seconds. If I wash my hands 5 times longer, how do you calculate the time?

Back

You multiply Sally's time by 5: 10 x 5 = 50 seconds.

Front

Brier has 5 times as many marbles as his friend who has 6 marbles. How do you find out how many marbles Brier has?

Back

You multiply the number of marbles his friend has by 5: 6 x 5 = 30 marbles.

Front

If Paul has 7 crayons and Steven has 9 times as many, how do you find out how many crayons Steven has?

Back

You multiply the number of crayons Paul has by 9: 7 x 9 = 63 crayons.

Front

Tim is 16 years old and is 2 times as old as April. How do you find April's age?

Back

You divide Tim's age by 2: 16 / 2 = 8 years old.

Front

What is the formula to find a number that is 'n' times larger than another number?

Back

The formula is: Larger Number = Smaller Number x n.

Front

If a number is multiplied by 0, what is the result?

Back

The result is always 0.

Front

What does it mean if one quantity is '3 times' another quantity?

Back

It means that the first quantity is equal to the second quantity multiplied by 3.

Front

How do you express 'twice as much' in mathematical terms?

Back

'Twice as much' means to multiply by 2.