Problem Solving

What is the flip-flop of the following number sentence:

5 = 2 + 3

• 5 = 3 + 2

• 2 = 3 + 5

• 3 = 2 + 5

Tags

CCSS.1.OA.B.3

What is the flip-flop of the following number sentence:

1 + 9 = 10

• 10 + 1 = 9

• 10 + 9 = 1

• 9 + 1 = 10

Tags

CCSS.1.OA.B.3

Can you flip-flop subtraction number sentences and get the same answer. For example:

9-5=4 and 5-9=4

• yes

• no

Tags

CCSS.1.OA.B.3

Fact families are math facts that are related. Fact families use the same numbers to get ____ addition and ____ subtraction number sentences.

• 1, 3

• 10, 10

• 0, 0

• 2, 2

What is the addition number sentence for the following facts:

3, 7, 10

• 10 + 3 = 7

• 7 + 3 = 10

• 10 + 7 = 3

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

What are the two addition number sentences for the following facts:

2, 6, 8

• 6 + 2 = 8

• 8 + 6 = 2

• 8 + 2 = 6

• 2 + 6 = 8

Tags

CCSS.2.OA.C.3

What are the two subtraction number sentences for the following facts:

2, 6, 8

• 6 - 2 = 8

• 8 - 6 = 2

• 8 - 2 = 6

• 2 - 6 = 8

Tags

CCSS.2.OA.C.3

What is the equality symbol?

What does that symbol mean?

True or False:

3+2 1+4

Tags

CCSS.1.OA.B.3

True or False:

4+4 5+3

Tags

CCSS.1.OA.B.3