unit 1 practice

Tom draws 7 bugs. Gina draws 3 bugs. How many bugs did they draw in all?

Which shows how to count on to solve the problem?

• 1. 7, 8, 9, 10

• 1. 7, 6, 5, 4

• 7+3

• 1. 7, 8, 9

Tags

CCSS.2.OA.A.1

Mia has 7 fish. Jack has 1 more fish than Mia.

Which equations show how many fish in all? Choose all that apply.

• 7+7+7=21

• 7+1=8

• 7+7+1=15

• 7+7=14

• 7+8=15

Tags

CCSS.2.OA.C.3

Show how to find the sum of 8+7

8+7 by making a 10. Then fill in the gray boxes. 2.NSO.2.1

8+7=​ (a)  

10+​ ​ (b)   = 15

• 15
• 5
• 10
• 12
• 20

Tags

CCSS.2.OA.A.1

Which have a sum of 18?

Choose all that apply.

• 10+8

• 9+8

• 9+9

• 8+10

• 8+8

Tags

CCSS.2.OA.C.3

7 friends go to the movies. They have 4 tickets.

How many more tickets do they need?

• addition fact

• 7-4 = 3

• Subtraction fact

• 7, 6, 5, 4

• Count on.

• 4, 5, 6, 7

• Count back.

• 4+3 = 7

Tags

CCSS.2.OA.A.1

Nita has 14 grapes. She eats 6 grapes.

Which addition fact can help you find how many grapes Nita has left?

• 6+6 = 12

• 6+7 = 11

• 6+8 = 14

• 8+8 = 16

Tags

CCSS.2.OA.A.1

13-7 = ?

• 6
• 10
• 8
• 5

Tags

CCSS.2.OA.A.1

Bruce has some coins.

He gives 4 coins to his brother.

Now Bruce has 9 coins.

How many coins did Bruce have at first?

Write an equation to solve

​ (a)   ​ (b)   ​ (c)   =​ (d)  

• 9
• +
• 4
• 13
• 5
• -
• 7
• 2
• 6
• 14

Tags

CCSS.2.OA.A.1

Maria has 4 pears. She buys some more pears. Now she has 12 pears.

How many pears does Maria buy? 2.​

​ (a)   ​ (b)   ​ (c)   = ​ (d)   Pears

• 5
• 10
• 15
• 12
• -
• 4
• 8

Tags

CCSS.2.OA.A.1

The team has 9 players. Then 2 players quit. After that, 5 players join the team.

How many players does the team have now?

Use the numbers on the cards. Complete both equations to solve the problem.

9 - ​ (a)   = ​ (b)  

7+ ​ (c)   =​ (d)  

• 2
• 7
• 5
• 12

Tags

CCSS.2.OA.A.1