Module 2

Mr. Baggy owns a pet store. He counted 10 goldfish in a big tank and 5 goldfish in a small tank. He sold 8 goldfish out of the big tank. Which number sentence will help us find the number of goldfish Mr. Baggy had left in all?

• 15 - 5

• 15 - 8

Select the numbers that make the number sentences true. 

12-9 = 

11-8 = 

15-6 =

• 2, 2, 7

• 3, 3, 9

Select the numbers that make the number sentences true. 

9 +_ = 13 

8 + _ = 12 

12 = _ +7 

• 4, 4, 5

• 6, 5, 4

Which two number sentence are related to 9 + _ = 13 ?

• 9 - 4 = 13

• 13 - 4 = 9

• 13 - 9 = 6

• 13 - 9 = 4

On paper draw a picture AND number bond that goes with the number sentences:

13 - 9 = 4

12 - 8 = 4

Mr. Baggy has 9 birds, 15 snakes, and 12 turtles.

On your own paper draw two ways (number bond and picture) that matches the number of SNAKES only.

Mr. Baggy has 9 birds, 15 snakes, and 12 turtles.

Mr. Baggy sold some snakes. NOW, he has 5 left. How many snakes did he sell?

Which number sentences will match

• 15 - 5

• 15 - 10

Mr. Baggy has 9 birds, 15 snakes, and 12 turtles.

Mr. Baggy sold 8 turtles. Which number sentence will help us?

• 15 - 8

• 12 - 8

Mr. Baggy has 9 birds, 15 snakes, and 12 turtles.

As Mr. Baggy gets ready to close his pet store for the day, he needs to know how many animals he has altogether.

He SOLD 10 snakes and 8 turtles. He did NOT sell any birds.

How many birds, snakes, and turtles does Mr. Baggy have left in his store altogether?

What number sentence will help us?

• 9 + 5 + 4

• 9 + 5 + 2

Is this number sentence true or false?

9 + 5 + 4 = 9 + 4 + 5

• True

• False