Multiplying Rational Numbers

Multiplying Integers

100

-8*5

-40

200

-9*-7

63

300

19*-10

-190

400

-17*-3

51

500

9*-8*-7

504

Multiplying Decimals

100

-0.15*1.9

-0.285

200

-12.3*-2

24.6

300

-7*0.05

-0.35

400

14.2*0.19

2.698

500

-0.3*9.1*-0.4

1.092

Multiplying Fractions

100

Solve and Simplify:

2/3 * -3/4

-1/2

200

Solve and Simplify:

-9 * -5/3

15

300

Solve and Simplify:

1 2/3 * -4 3/5

-11 1/2

400

Solve and Simplify:

2 4/9 * 6/7

2 2/21

500

Solve and Simplify:

-9 * 1/8

-1 1/8

Addition and Subtraction Review

100

-9 + -25

-34

200

7 + -23

-16

300

-1/3 + -3/4

-1 1/2

400

0.9-(-2.3)

3.2

500

8.6+ (-7.2)

1.4

Mixed Review

100

A positive or negative whole number.

Integer

200

When adding and subtracting decimals you must __________ the decimals.

line up

300

When multiplying fractions you do not need a ________ ________.

common denominator

400

How do you know how many decimal places are in the product of a decimal multiplication problem?

Count the number of digits after the decimal points in the original problem.

500

Draw the triangle and explain how to use it.

Answers may vary.