Math

Rational NumbersAddition and Subtraction

100

(7/4) - (-1/2) =

9/4

200

(-0.8) + (-7.2) - 5.4

-13.4

300

3.5 + (-13.5) + (-5.6) = 

-15.6

400

-5/6 + 7 + (-1/6) = 

8

500

1 3/4 + (-1/2) + (-1/4) =

1

Rational Numbers Multiplication and Division

100

(-1/2) * (3/2) = 

-3/4

200

-3.6 divided by 0.4

-9

300

1/8 divided by (-1/5) = 

-5/8

400

(-5/8) (2/5) (-1/4) = 

1/16

500

-8.95 divided by -0.05

179

Solving Equations

100

8x - 3 = 24

x = 3

200

6z +7 = 49

x = 7

300

9.8 + 0.5d = 19.8

d = 20

400

(3/4)y - 12 = 1/2

d = 16.667

500

(c + 4)/6 = 15

c = 86

Simplify Expressions

100

-8x + 3y + 2x 

-6x + 3y

200

-a - 4b - 2a + 7c 

-3a - 4b + 7c

300

(1/4)x + 7x - 2y + 8y - (1/2)y

7 1/4 x +5 1/2 y

400

d/5 - 3d + 7c - 12c

-2 4/5d - 5c

500

5z/6 + 9y/10 - 3y/5 - 2z/3

1/6z + 3/10y

Word Problems

100

Zack has 5 more crayons then Matthew, Matthew has 3 more crayons then Vito. If Vito has 50 crayons how many crayons does Zack have?

Zack has 58 crayons.

200

A kid has 15 lolly pops. He buys 13 more. Susie asks for 2.  He gives one to a friend and sells 4. How many lolly pops does the kid have?

The  kid has 21lolly pops.

300

Alvin has 58 candies. There are 15 butterscotch and the rest are peppermint.  What is the ratio of butterscotch candies to peppermint candies? 

15:43

400

It's tax-free weekend and I paid $25.80 for 3 books at the bookstore!  The books were all the same price, so what is the cost of one book?

One book is $8.60.

500

Olivia has 6 times more candy then her friend, her friend has 18 candies.  Write an expression to show how much candy Olivia has, then solve?

Olivia has 18*6 = 108 candies.