EC2 Post-Test Review

How many more?

100

1 car + ___ cars = 5 cars

4 cars

1 car + 4 cars = 5 cars

200

6 popsicles + ___ popsicles = 8 popsicles

How many popsicles do we need to have 8 popsicles altogether?

2 popsicles

300

3 pickles + ___ pickles = 6 pickles

How many pickles do we need to have 6 pickles altogether?

3 pickles

3 pickles + 3 pickles = 6 pickles

400

6 + __ = 9

3

500

8 + __ = 10

2

Related Number Sentences

100

__ = 2 - 1

A) __ + 1 = 2

B) __ = 2 + 1

1 = 2 - 1

A) 1+ 1 = 2

200

__ = 5 - 4

A) __ + 5 = 4

B) __ = 5 + 4

C) __ + 4 = 5

1 = 5 - 4

C) 1 + 4 = 5

300

__ = 10 - 3

A) __ + 10 = 3

B) __ + 3 = 10

7 = 10 - 3

B) 7 + 3 = 10

400

__ = 12 - 4

A) __ + 12 = 4

B) __ + 4 = 12

8 = 12 - 4

B) 8 + 4 = 12

500

__ = 12 - 9

A) __ + 9 = 12

B) __ + 12 = 9

3 = 12 - 9

A) 3 + 9 = 12

Subtraction

100

There are 9 pigs on a farm. There are 2 grown-up pigs, and the rest are babies.

How many of the pigs are babies?

7 pigs are babies

* Review picture and number sentence

200

There are 9 kittens on the rug. Then 2 kittens run away from the rug. How many kittens are on the rug now?

7

300

8 triangles - 3 triangles = __ triangles

8 triangles - 3 triangles = 5 triangles

400

Which number sentence is not true?

A) 10 − 8 = 2

B) 7 = 7 − 0

C) 3 − 1 = 2

D) 4 - 2 = 1

D) 4 - 2 = 1

500

Which number sentence is not true?

A) 8 − 8 = 0

B) 6 = 6 − 0

C) 9 − 1 = 9

D) 1 = 5 − 4

C) 9 − 1 = 9

Addition

100

Gabriel sorts cookies into 3 groups. This number sentence shows the number of cookies in each group.

8 + 6 + 2 = __

How many cookies does Gabriel sort altogether?

16

200

Lexi sorts shapes into 3 groups. This number sentence shows the number of shapes in each group.

9 + 7 + 1 = __

How many shapes does Lexi sort altogether?

17

300

Farrah's friends bring some toys to her house. Kylie brings 8 toys. Zoe brings 2 toys. Mia brings 8 toys. How many toys did Farrah's friends bring to her house?

18

400

Which number sentence shows the correct total number?

A) 4 + 3 + 1 = 9

B) 4 + 3 + 1 = 8

B) 4 + 3 + 1 = 8

500

Which number sentence shows the correct total number?

A) 5 + 3 + 2 = 10

B) 7 + 3 + 2 = 10

A) 5 + 3 + 2 = 10

Number Path

100

Use the number path to solve:

3 - 2 = __

3 - 2 = 1

200

Use the number path to solve:

9 - 1 = __

9 - 1 = 8

300

Use the number path to solve:

8 - 2 = __

8 - 2 = 6

400

Use the number path to solve:

3 + __ = 8

3 + 5 = 8

500

Use the number path to solve:

2 + __ = 9

2 + 7 = 9