Math 8 Chapter 6

Multiply 1 and 3/4 x -4

-7

Multiply -4/9 x 2/3

-8/27

Evaluate 12a + 3b when a=1/3 and b=-3/4

-9

Solve for z 5z + 1.25 = 6.8

z=1.11

Solve for z z -9/5 = - 1/10

z=17/10

Solve for z 3z - 4/7 = 2

z=6/7

Solve for z z + .25 = 7.4

z=7.15

What is the additive inverse of 5/18

18/5

Write the equation A recipe calls for 2 and 1/2 cups of sugar. You only have 1 and 1/3 cups of sugar. How much more sugar do you need?

2 and 1/2 - 1 and 2/3 = z

Convert to scientific notation 2,100,000

2.1 x 10 to the 6th

Write the equation Two-thirds of a number is 46

2/3z=46

18.65 divided by 5.5

3.39

9/16 divided by 6

3/32

Multiply 3 and 1/8 x 4 x 2 and 2/5

30

Simplify, combine like terms 7y + 4 -3/5y

32/5y + 4

Evaluate e/f + f/e when e=15 and f=9

34/15

Simplify, combine like terms 7/5b + 1/3 + 7b -2

42/5b - 5/3

Subtract 7 and 5/6 minus 2 and 1/2

5 and 1/3

Convert to scientific notation 610,000,000

6.1 x 10 to the 8th

Evaluate the following when x=-3, y=5/8, z=3.7 and w=0.05 (z/w)-(x*x)

65

Multiply (3.69 x 10 to the -8th)(1.9 x 10 to the -6th)

7.011 x 10 to the -14th

Add 3/5+1/2+3/4

1 and 17/20

Add 5.3 x 10 to the 8th + 6.1 x 10 to the 8th

1.14 x 10 to the 9th