7.1 Mental Math

Use mental math to solve 40-10=t

• t=20

• t=50

• t=30

• t=10

Tags

CCSS.2.NBT.B.5

Use mental math to solve 250-u=100

• u=350

• u=300

• u=150

• u=250

Tags

CCSS.1.OA.C.6

Use mental math to solve r+95=103

• r=8

• r=10

• r=18

• r=2

Tags

CCSS.1.OA.D.8

Use mental math to solve: m + 5 = 8

5 more than a number m equals 8.

• m = 3

• m = 5

• m = 8

• m = 13

Tags

CCSS.6.EE.B.5

Use mental math to solve:
 $x-10=9$  

• x = 10

• x = 19

• x = 18

• x = 1

Tags

CCSS.6.EE.B.7

Use mental math to solve: 
 $12+x=25$  

•  $x=19$  

•  $x=5$  

•  $x=4$  

•  $x=13$  

Tags

CCSS.1.OA.D.8

Use mental math to solve: 
 $100\ \div\ v\ =\ 10$ 

• v = 10

• v = 1000

• v = 20

• v = 15

Tags

CCSS.4.NBT.B.6

Use mental math to solve: 

6 x p = 42

• p = 8

• p = 9

• p = 7

• p = 6

Tags

CCSS.3.OA.A.4

Use mental math to solve: 
 $27\div\ v\ =\ 3$ 

• v = 30

• v = 24

• v = 9

• v = 15

Tags

CCSS.4.NBT.B.6

Use mental math to solve: 

r x 5 = 35

• r = 4

• r = 7

• r = 40

• r = 6

Tags

CCSS.3.OA.A.4