Multiplication & Division Review

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

What is division?

Back

Division is a mathematical operation that represents the process of splitting a number into equal parts. For example, 12 divided by 4 (12 ÷ 4) means splitting 12 into 4 equal parts, which equals 3.

Front

How do you calculate the total number of items when given a quantity in dozens?

Back

To find the total number of items in dozens, multiply the number of dozens by 12. For example, 32 dozen cookies equals 32 x 12 = 384 cookies.

Front

If Jordan earns $12 for cleaning his room and $7 for taking out the trash, how do you find his total earnings for 3 weeks?

Back

First, calculate his weekly earnings: $12 + $7 = $19. Then multiply by 3 weeks: $19 x 3 = $57.

Front

What is the formula to find the total number of items sold by multiple people?

Back

To find the total number of items sold, multiply the number of people by the number of items each person sells. For example, 124 students selling 12 pizza kits each equals 124 x 12 = 1,488 kits.

Front

How do you find the weight of an object if you know it is a multiple of another object's weight?

Back

To find the weight of the smaller object, divide the weight of the larger object by the multiple. For example, if an adult bison weighs 1,752 pounds and is 24 times heavier than a calf, the calf weighs 1,752 ÷ 24 = 73 pounds.

Front

What is area in geometry?

Back

Area is the measure of the space inside a two-dimensional shape, usually measured in square units. For example, the area of a rectangle is calculated by multiplying its length by its width.

Front

How do you calculate the area of a rectangle?

Back

To calculate the area of a rectangle, use the formula: Area = Length x Width.

Front

What is a word problem in mathematics?

Back

A word problem is a mathematical question presented in a narrative form, requiring the reader to extract relevant information and perform calculations to find the solution.

Front

What does it mean to solve for an unknown in an equation?

Back

Solving for an unknown means finding the value of a variable that makes the equation true. For example, in the equation x + 5 = 10, solving for x gives x = 5.