Mental Math 4-1 & 4-2

What number is 20 more than 40?

• 20

• 40

• 60

• 80

Tags

CCSS.2.NBT.B.8

What number is 30 LESS than 60?

• 30

• 60

• 90

• 2

Tags

CCSS.2.NBT.B.8

Start with 6, add 3, subtract 4...

• 12

• 5

• 6

• 4

Start with 8, subtract 5, add 3

• 16

• 10

• 9

• 6

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What number is halfway between 20 and 30?

• 20

• 30

• 25

• 35

Tags

CCSS.5.OA.B.3

Add 40 + 6

• 46

• 49

• 64

• 146

Tags

CCSS.2.NBT.B.6

Add 50 + 30

• 150

• 90

• 80

• 85

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

How many quarters are in a dollar?

• 4

• 3

• 5

• 8

What number is 20 more than 50?

• 30

• 70

• 60

• 25

Tags

CCSS.2.NBT.B.8

What number is 10 less than 40?

• 50

• 35

• 20

• 30

Tags

CCSS.1.NBT.C.5