Multiplicative and Additive Comparisons

Front

What is a multiplicative comparison?

Back

A multiplicative comparison shows how many times one quantity is compared to another using multiplication.

Front

What does '5 times as many as 7' mean?

Back

It means 5 multiplied by 7, which equals 35.

Front

If a number is 4 times greater than another number, how do you express this mathematically?

Back

You multiply the smaller number by 4.

Front

How do you find out how long the first graders have recess if it is 4 times longer than the 15 minutes of the class?

Back

Multiply 15 minutes by 4 to get 60 minutes.

Front

If Mario is 3 years old and his brother is 4 times older, how do you calculate his brother's age?

Back

Multiply Mario's age (3) by 4 to find his brother's age (12).

Front

Anna's dad is 40 years old and is 8 times her age. How do you find Anna's age?

Back

Divide 40 by 8 to find Anna's age (5 years old).

Front

What is an additive comparison?

Back

An additive comparison shows how much more or less one quantity is compared to another using addition or subtraction.

Front

If a class has recess for 15 minutes and another class has 10 minutes, how do you express the difference?

Back

You subtract 10 from 15 to find the difference in recess time.

Front

What is the equation for '5 times 7'?

Back

5 x 7 = 35.

Front

If a number is 3 times greater than 4, what is the number?

Back

3 x 4 = 12.