Mental Math

30 x 40

• 12
• 120
• 1,200
• 12,000

Tags

CCSS.5.NBT.B.5

7 x 3000

• 2,100
• 28,000
• 21,000
• 2,800

Tags

CCSS.4.NBT.B.5

  132 ÷ 12

• 9
• 10
• 11
• 12

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

(8 x 5) + (8 x 10) =

• 120
• 100
• 140
• 80

Tags

CCSS.3.OA.B.5

99 =

• (9 x 10) + (9 x 9)
• (9 x 9) + (9 x 2)
• (9 x 10) + (9 x 2)
• (9 x 10) + (9 x 1)

Tags

CCSS.6.NS.B.4

72 ÷ 8 =

• (9 x 1)
• (8 x 9)
• (9 + 8)
• (8 x 1)

Tags

CCSS.3.OA.B.6

4 x 10² + 6 x 10⁴

• 2,400
• 24,000
• 240,000
• 24,000,000

Tags

CCSS.5.NBT.A.2

Which one is an example of the distributive property for the following problem?   6 x 23

• (6 + 20) x (6 + 3)
• 3 x (6 x 20)
• (6 x 20 ) + (6 x 3)
• 6 x (20 x 3)

Tags

CCSS.3.OA.B.5

22x3=

• 42
• 56
• 72
• 66

Tags

CCSS.4.NBT.B.5

-4 - 4 

• 8
• 0
• -8 
• -1

Tags

CCSS.7.NS.A.1C