Adding and Subtracting Positive and Negative Numbers

Sign of the Answer

100

18 + (-9)

What is positive?

200

-300 + (-100)

What is negative?

300

25 + (-75)

What is negative?

400

15 - (-20)

What is positive?

AddingIntegers

100

-3 + (-12)

What is -15?

200

7 + (-4)

What is 3?

300

-21 + 17

What is -4?

400

-24 + (-24)

What is -48?

Adding Decimals

100

-2.3 + (-4.1)

What is -6.4?

200

-12.4 + 22.6

What is 10.2?

300

75.5 + (-4.1)

What is 71.4?

400

-4.005 + 15.62

What is 11.615?

Subtracting Integers

100

6 - (-5)

What is 11?

200

-20 - 7

What is -27?

300

8 - 12

What is -4?

400

-10 - (-10)

What is 0?

Subtracting Decimals

100

-35.2 - 10.1

What is -45.3?

200

-20.4 - 10.2

What is -30.6?

300

19.2 - (-16.5)

What is 35.7?

400

-50.9 - (-40.8)

What is -10.1?