subtraction

Multiple Choice

Which of the following is a correct way to subtract numbers within 20?

• 15 - 7 = 8

• 18 - 12 = 5

• 20 - 5 = 14

• 13 - 4 = 9

Fill in the Blanks

Sara had 20 recycled items. She took 12 items to the recycling center. Now she has

items left.

Multiple Choice

Which strategy is suggested for solving subtraction problems like 8 - 2 or 13 - 2 in the lesson?

• Count-back strategy

• Addition strategy

• Multiplication strategy

• Guess and check

Multiple Select

Which of the following can be used to help you count back when subtracting, according to the lesson?

• Dots

• Fingers

• Counters

• Ms. Marissa's cat

Multiple Choice

What is the difference when you subtract 18 - 16 using the count-up strategy?

• 2

• 3

• 4

• 1

Multiple Choice

Which strategy is used when subtracting two numbers that are close together?

• Count-up strategy

• Count-down strategy

• Skip counting

• Doubling strategy

Multiple Select

Which of the following are true about fact families?

• They use three numbers to make four related facts.

• They always include two addition and two subtraction sentences.

• They can use any three numbers.

• They help us understand the relationship between addition and subtraction.

Fill in the Blanks

Fill in the blank: In the subtraction sentence 12 - ___ = 8, the missing number is ___

Multiple Select

Which of the following are correct doubles subtraction facts?

• 12 - 6 = 6

• 8 - 4 = 4

• 16 - 8 = 8

• 14 - 8 = 6

Fill in the Blanks

When you subtract using doubles, 10 - 5 =

Multiple Choice

What is the related addition doubles fact for the subtraction problem 14 - 7 = 7?

• 7 + 7 = 14

• 6 + 6 = 12

• 8 + 8 = 16

• 5 + 5 = 10

Multiple Choice

What happens when you subtract zero from a number?

• The number stays the same.

• The number becomes zero.

• The number increases by one.

• The number decreases by one.

Fill in the Blanks

When you subtract the same number from itself, the answer is

.

Draw

Solve 18-6

Poll

How do you feel about subtraction?