Math Review 3rd Grade

Front

What is a number sentence?

Back

A number sentence is a mathematical statement that shows a relationship between numbers using operations like addition, subtraction, multiplication, or division.

Front

How do you find the total number of items when some are given away?

Back

To find the total number of items left after giving some away, subtract the number given away from the original total.

Front

What is the formula to find the perimeter of a triangle?

Back

The perimeter of a triangle is found by adding the lengths of all three sides together.

Front

What does it mean to share equally?

Back

To share equally means to divide something into the same amount for each person or group.

Front

How do you solve for an unknown in a multiplication equation?

Back

To solve for an unknown in a multiplication equation, divide the total by the known number.

Front

What is the difference in math?

Back

The difference is the result of subtracting one number from another.

Front

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

Back

If one quantity is 'three times' another, it means it is three times larger than that quantity.

Front

How do you calculate the total number of items in two groups?

Back

To calculate the total number of items in two groups, add the number of items in each group together.

Front

What is a mathematical operation?

Back

A mathematical operation is a calculation that combines numbers, such as addition, subtraction, multiplication, or division.

Front

What is the relationship between addition and subtraction?

Back

Addition and subtraction are inverse operations; addition combines numbers, while subtraction takes one number away from another.