Unit 1 review

Which equation has 9 as its solution? 

• 19 - 10 = __

• 10 + __ = 12

• 7 - 2 = __

• 12 - __ = 6

Which expression does NOT have a sum of 18? 

• 10 + 8

• 9 + 9

• 11 + 8

• 8 + 10

There are 10 blueberries in the bowl and 8 blueberries in the cup.  How many fewer blueberries are in the cup?

• 18

• 2

• 4

• 6

Which equation has 6 as the unknown number?

• 10 - 2 = __

• __ + 4 = 12

• __ + 3 = 9

• 14 - __ = 7

Which expression has a sum of 17? 

• 8 + 8

• 6 + 10

• 7 + 7

• 8 + 9

Leia has 8 cats. Rina has 1 more cat than Leia. 

 

Which equation shows how many cats in all?

• 8 + 1

• 8 + 8 + 1

• 8 + 9

• 1 + 1

Which number makes the equation true?

 

2 + ? = 20

• 10

• 16

• 18

• 20

Cari has 15 buttons. She gives some to her sister. Now she has 10 buttons.

 

Which equation shows how many buttons Cari gave to her sister? 

• 15 - 5 = 10

• 15 + 10 = 25

• 10 - 15 = 7

• 10 + 7 = 17

 Which equation has 9 as its solution?

• 16 – 3 = __

• 9 + __ = 11

• 15 = __ + 6

• 13 + __ = 20

Which equation has 7 as the unknown number?

• 7 + 4 = __

• __ = 7 – 0

• 5 + __ = 9

• 10 + __ = 17