Math Positive and Negative Numbers

Addition

100

5+ (-4)=

1

200

-17+2

-15

300

-3+15=

12

400

-5+7+(-12)= 

-10

500

-1+6+10+(-4)= 

11

Subtraction

100

12-3= 

9

200

-5- (-8)= 

3

300

-1- (-20)=

19

400

-50- (-50)=

0 

500

- 15- 17+ 3= 

-29

Decimal

100

4.5+2.1=

6.6

200

-7.35+(-5.2)= 

-12.55

300

5.4-(-7.25)=

12.65

400

-3.5+7.8=

4.3

500

-2.85+(-5.1)-8.75=

-16.7

Fraction

100

1/7 +3/7= 

4/7

200

5/15+5/15=

2/3

300

-4/9 - 3/9

-7/9

400

-3/10+5/20

-1/20

500

-3/4+-1/7=

-25/28

Word Problems

100

If the temperature dropped are you adding or subtracting? 

Adding 

200

Tell me two ways to show your work 

Writing a math problem

Drawing a picture 

300

A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?

-550 feet

400

Your checking account is overdrawn by $45.75. You write a check for $14.35. What is the balance of your account?

-60.10

500

The temperature in Falmouth was -12 degrees and rose 35 degrees by 2pm. What was the temperature at 2pm?

23 degrees