Subtraction Strategies (related, count back/up, all, & 0)

Which two related addition facts can help you solve 13 – 7? Pick 2 answers.

• 7 + 6 = 13

• 7 + 13 =20

• 6 + 7 = 13

• 6 + 1 = 7

Count back. What is the number that is 2 less?

4 – 2 = _______

• 6

• 2

• 1

• 3

Tags

CCSS.1.OA.C.5

CCSS.1.OA.C.6

10 - 0 =10 is an example of which type of fact?

• Take away 10

• Subtract Zero

• Subtract All

• Fact Family

Which subtraction question would best be answered using the Count Back strategy? HINT: you subtract a small number.

• 17-10

• 7 - 1

• 10 - 6

• 8 - 8

Which is an example of a Subtract All?

• 17 - 7

• 8 - 5

• 15 - 15

• 12 - 6

Using 4, 3, 7, Which one of the problems is in the fact family?

• 4+7=11

• 7+4=11

• 4-1=3

• 4+3=7

Using the number line which strategy is being used?

• Subtract all

• Subtract zero

• Count back

• Count up

What is the difference?

Is this a fact family?

• 
• 

Tags

CCSS.1.OA.A.1

CCSS.1.OA.A.2

CCSS.1.OA.D.7

CCSS.1.OA.D.8

7 - 4 =