Multiplication and Division with Unknown Numbers

Front

What is multiplication?

Back

Multiplication is a way to add a number to itself a certain number of times. For example, 3 x 2 means adding 3 two times: 3 + 3 = 6.

Tags

CCSS.3.OA.A.1

Front

What is division?

Back

Division is splitting a number into equal parts. For example, 10 ÷ 2 means splitting 10 into 2 equal groups, which gives 5.

Tags

CCSS.3.OA.A.2

Front

What does the symbol 'x' mean in math?

Back

The symbol 'x' means multiplication. It shows that we are combining groups of numbers.

Tags

CCSS.3.OA.A.2

Front

What does the symbol '÷' mean in math?

Back

The symbol '÷' means division. It shows that we are splitting a number into equal parts.

Tags

CCSS.3.OA.A.2

Front

If 5 x 2 = 10, what is the unknown number in ____ x 2 = 10?

Back

The unknown number is 5.

Tags

CCSS.3.OA.A.4

Front

How do you find out how many groups of a number fit into another number?

Back

You can use division. For example, to find out how many groups of 2 fit into 10, you do 10 ÷ 2 = 5.

Tags

CCSS.3.OA.A.3

Front

What is an equation?

Back

An equation is a math sentence that shows that two things are equal. For example, 3 x 5 = 15 is an equation.

Front

What does it mean to have equal groups?

Back

Equal groups mean that each group has the same number of items. For example, if you have 10 apples and 2 equal groups, each group has 5 apples.

Tags

CCSS.2.OA.C.3

Front

If there are 10 students and they sit in 2 equal rows, how many students are in each row?

Back

There are 5 students in each row.

Tags

CCSS.3.OA.A.3

Front

What is the result of 10 ÷ 2?

Back

The result is 5.

Tags

CCSS.3.OA.B.6