Mental Computation Fluency (Equations/Expressions)

For y = 9

60 - 5y

• 15

• 24

• 46

For y = 6
 $y^{2\ }-\ 10$ 

• -16

• 16

• 26

Solve for y

y + 10 = 70

• 7

• 60

• 80

Solve for y

y + 60 = 20

• -40

• 20

• 80

Solve for y
 $\frac{y}{40}$  = 6

• 120

• 240

• 460

Solve for y

2y + 10 = 50

• 20

• 50

• 60

For y = 0.5

20y - 10

• 0

• 10

• 19.5

For y = 7

2y - 10

• -12

• -8

• 4

For y = $\frac{1}{2}$  

30y

• 2

• 15

• 30.5

Solve for y

3y + 5 = 35

• 5

• 10

• 20