Compose and Decompose Numbers Up to 20

Multiple Choice

Which of the following  is a way of adding numbers?

• compose

• decompose

• compose and decompose

• none of the two

Multiple Choice

Which of the following is a way to separate the given number into two?

• compose

• decompose

• compose and decompose

• none of the two

Multiple Choice

The number 10 may be decomposed into___ and___ .

• 7 and 1

• 3 and 5

• 4 and 4

• 8 and 2

Multiple Choice

The number 7 is 2 and ________.

• 9

• 8

• 7

• 6

Multiple Choice

Which expression shows a way to make the number 15?

• 4 + 9

• 5 + 9

• 6 + 9

• 7 + 9

Multiple Select

Compose

2 and 8 = _____

• 8

• 9

• 10

• 11

Multiple Choice

Decompose 6

• 3 + 5

• 3 + 4

• 3 + 2

• 3 + 3

Multiple Choice

Decompose 7

• 2 and 5

• 2 and 6

• 0 and 5

• 2 and 4

Multiple Choice

What is the missing number?

• 8

• 9

• 6

• 7

Multiple Select

Compose 8 + 12 =

• 20

• 15

• 12

• 22