Operations with Negative Numbers

Add/Subtract Decimals

100

4.5 - 6.7

-2.2

200

-7.8-9.1

-16.9

300

-14.5 +(-2.03)

-16.53

400

-8.9+3

-5.9

500

-5.6-(-17.61)

12.01

Multiply/Divide Decimals

100

4.5 * (-6.7)

-30.15

200

-12.3*(-3)

36.9

300

-8.71*4.1

-35.711

400

6.7*(-4.55)

-30.485

500

-148.4 / 5.3

-28

Add/Subtract Fractions

100

1/4 -4/5

-11/20

200

-1/5 +(3/8)

7/40

300

-8/9-(-3/4)

-5/36

400

4 2/3 - 6 1/3

-5/3 or -1 2/3

500

-6 4/5 - 3 1/2

-103/10 or -10 3/10

Multiply/Divide Fractions

100

-1/2 *(-4/5)

2/5

200

-8/9 * 6/7

-16/21

300

-4/5 / 8/15

-3/2 or -1 1/2

400

-1 2/3 * 4 8/9

-220/27 or -8 4/27

500

-5 1/4 / (-3 3/16)

28/17 or 1 11/17

Random!

100

What is the first step when adding fractions?

Find the Least Common Denominator.

200

What is the first step when dividing fractions?

Multiply by the reciprocal.

300

What is Ms. Kelley's middle name?

Amelia

400

How many siblings does Ms. Kelley have?

2 sisters

500

About how many building windows are in Manhattan?

10.7 million