Math Review 2

Front

What is a related fact in multiplication?

Back

A related fact in multiplication is a number sentence that shows the relationship between multiplication and division. For example, if 5 × 3 = 15, then 15 ÷ 3 = 5.

Front

How can you check your division answer?

Back

You can check your division answer by using multiplication. For example, if you solved 40 ÷ 8 = 5, you can check by calculating 8 × 5 = 40.

Front

What is the total time for a round trip if one way takes 49 minutes?

Back

The total time for a round trip is 98 minutes, because you add the time for both ways: 49 minutes + 49 minutes = 98 minutes.

Front

What is the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. For example, if a rectangle has a length of 6 units and a width of 4 units, its area is 6 × 4 = 24 square units.

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 × 4 means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Front

What is division?

Back

Division is a mathematical operation that splits a number into equal parts. For example, 12 ÷ 4 means splitting 12 into 4 equal parts, which equals 3.

Front

What is a number sentence?

Back

A number sentence is a mathematical statement that includes numbers and an operation (like addition, subtraction, multiplication, or division). For example, 7 + 2 = 9 is a number sentence.

Front

What does it mean to find the missing number in a number sentence?

Back

Finding the missing number means solving for a number that makes the number sentence true. For example, in 5 × ? = 15, the missing number is 3.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. This means that if you know one, you can find the other. For example, if 4 × 5 = 20, then 20 ÷ 5 = 4.

Front

How do you calculate the area of a rectangle with dimensions 3 units by 8 units?

Back

To calculate the area, multiply the length by the width: Area = 3 × 8 = 24 square units.