Random grade 7 math

expressions

100

evaluate if x=4  y=6  z=3

x+y+z

13

200

evaluate if x=4  y=6  

3x+y

18

300

evaluate if x=4  y=6  z=3

x+y-3z

1

400

evaluate if x=4  y=6  z=3

3(x+z)

21

500

evaluate if x=4  y=6  z=3

yz-x

14

writing expressions

100

use the distributive property to write an equivalent expression 

6(80+1)

486

200

Use the distributive property to write an equivalent expression

(300+6)4

1224

300

Use the distributive property to write an equivalent expression

-25(80+2)

-2050

400

Use the distributive property to write an equivalent expression 

A planter weighs 2 pounds and holds 3 pounds of soils.  What would be the weight of 9 planters full of soil?

45 pounds

500

Use the distributive property to write an equivalent expression

A uniform costs $42 for the sweater and $29 for the slacks.  What would the cost of 6 uniforms be?

$426

Solve equations

100

Solve 

3x=24

x=8

200

solve

5g=-20

g=-4

300

solve

u/-11=11

u=-121

400

solve

5c=85

c=17

500

solve

9z=144

z=16

Rational number operations

100

solve and write in simplest form 

1/2 divided by 1/10

5

200

solve and write in the simplest form 

17/20 divided by -3/10

-2 5/6

300

solve

4 11/12 divided by 4 5/6

1 1/58

400

Solve

7/15 + 3/6

29/30

500

Solve

-6 2/7 -5 3/14

-11 1/2

Simple equations

100

Solve 

y-7=-5

y=2

200

Solve

w+9=-9

w=-18

300

solve

y+12=-10

y=-22

400

Solve

b+13=-20

b=-33

500

solve

K+2=-15

K=-17