Negative and Positive Decimals

Rules

100

How do I write my addition or subtraction of two decimals?

Line up the Decimals

200

What do you do when Adding or Subtracting Decimals with Unlike Signs?

Subtract the Decimals

300

True or False. When you multiply or divide two negative decimals, the answer will stay negative. 

False. The answer will be positive.

400

What do you add as "placeholders" when you add/subtract decimals.

Zeros

500

When adding two decimals with negative signs, you get what kind of answer?

A negative answer.

Adding Negative Numbers

100

-25.68 + (-15.01) = 

-40.69

200

-54.87 + 28.92 = 

-25.95

300

(-75.134) + 19.2311 = 

-55.9029

400

82.11 + (-83.11) =

-1

500

-54 + 16.23 = 

-37.77

Subtracting Negative Numbers

100

32.5 - 89.64 = 

-57.14

200

913.9 - 1103.1 = 

-189.2

300

17.9 - (-19.4) = 

37.3

400

(-15.5) - (-15.5) = 

0

500

54 - 221.32 = 

-167.32

Multiplying Negative/Positive Decimals

100

6.9 x (-3.2) = 

-22.08

200

-19.22 x 2.5 = 

-48.05

300

-5.117 x 0.36 = 

-1.84212

400

36.1 x (-4) = 

-144.4

500

-2.43 x -4.3 = 

10.449

Dividing Negative/Positive Decimals

100

-18.56/0.2 = 

-92.8

200

-9/(-0.45) = 

+20

300

-64.8/5.4 = 

-12

400

-2.04/(-0.17) = 

+12

500

-52.48/0.16 = 

-328