Envision Topic 7

The pet store has 22 land turtles and 35 freshwater turtles. How many turtles does the pet store have in all?

Which equation models the problem?

• 22 + ? = 35

• 22 + 35 = ?

• ? + 22 = 35

• 35 - 22 = ?

Some dogs are at the park. 10 dogs join them. Now there are 24 dogs. How many dogs were at the park at first?

Which equation models the problem?

• ? + 10 = 24

• 10 + 24 = ?

• 14 + 14 = ?

• 10 + ? = 20

Addition and subtraction can be shown using a bar diagram.

• True

• False

There are 16 more adults than students at the game. There are 84 adults at the game. How many students are at the game?

Lucy counts 26 butterflies in the garden. 7 fly away. Then 8 more butterflies come to the garden. How many butterflies are in the garden now? Use two steps to solve the problem.

• 25

• 1

• 27

• 41

Emily makes 43 backpack charms and some friendship bracelets. She makes 70 items in all. How many friendship bracelets does Emily make?

A sum is the answer to a subtraction problem.

• True

• False

Throw back!

Which equation matches the array?

• 5 + 5 = 10

• 5 + 5 + 5 = 15

• 5 + 5 + 5 + 5 = 20

• 5 + 5 + 5 + 5 + 5 =25

Vincent saw 18 ducks on land and 6 ducks on the water. All of a sudden, 5 ducks fly away. How many ducks are left? Use two steps to solve.

• 17

• 19

• 29

• 30

43 is the __________ in the equation 43 - 16 = 27.

• part

• whole

• difference

• regroup