Mental Math

Which is the missing number: 7 + ___ = 20

• 10

• 12

• 13

• 14

Tags

CCSS.1.OA.D.8

Which number sentence is wrong?

• 8 + 5 = 13

• 13 - 5 = 8

• 5 + 8 = 13

• 8 - 5 = 13

Tags

CCSS.1.OA.B.3

____ - 9 = 6

• 13

• 14

• 15

• 16

Tags

CCSS.1.OA.D.8

What fraction is shaded?

• three quarters

• two thirds

• quarter

• third

Tags

CCSS.2.G.A.3

What shape is this?

• pentagon

• octagon

• hexagon

• pyramid

Tags

CCSS.2.G.A.1

What is the place value of the underlined digit? 129

• H

• Units

• Ten

• T

Tags

CCSS.4.NBT.A.1

72, 75, 78, ____

• 18

• 80

• 81

• 79

Tags

CCSS.2.NBT.A.2

99, 95, 91, ___

• 78

• 87

• 90

• 86

Tags

CCSS.1.NBT.A.1

What needs to be added to 4 to make 10?

• 2

• 6

• 4

• 3

Tags

CCSS.1.OA.A.1

7, how many more to make 20?

• 13

• 12

• 10

• 11

Tags

CCSS.1.OA.A.1