Unit 6-8 Review

Which number shows how many ducks left to go swimming?

5-___ = 3

• 2

• 4

• 1

Ms. Ortiz found 8 pencils. Some were on the floor and some on the table.

Which two equations could show how many pencils Ms. Ortiz found?

• 8 = 4 + 4

• 8 = 3 + 3

• 8 = 5 + 3

Which number makes 7 when added to 2?

• 3

• 5

• 6

One dog left the bathtub. Four dogs were still left in the bathtub. How many dogs were in the bathtub at first?

__ - 1 = 4

• 4

• 2

• 5

Eva has 2 oranges. Her mom gives her 2 more oranges.

Her friend eats 1 one of the oranges. How many oranges does Eva have now?

• 4

• 3

• 1

William has some toy dinosaurs. His dad gave him some more for his birthday. Now he has 8 toy dinosaurs.

Which addition equation shows how many toy dinosaurs he has?

• 8 = 4 + 4

• 8 = 6 + 1

• 8 = 4 + 3

Which model shows the addition sentence 5 + 5 = 10?

• 
• 
• 

How many donuts are in the picture?

• 8

• 7

• 9

Which subtraction sentence is shown in the ten frame?

• 6 - 2 = 4

• 4 - 2 = 2

• 5 - 2 = 3

Malia has 10 crayons. She gives 2 to Luisa. How many crayons does Malia have left?

• 7

• 9

• 8