Subtracting Rational Numbers

Subtracting Integers

100

-12 - 15

-27

200

15 - (-13)

28

300

-45 - 22

-67

400

- 4 - (-2) - 12

-14

500

25 - 29 - (-32)

28

The same as...

100

Rewrite - 15 - 12 as an addition problem.

-15 + -12

200

Rewrite -4 - (-2) as an addition problem.

-4 + 2

300

Rewrite -45 - (-1) - 4 as an addition problem.

-45 + 1 + -4

400

Write an expression to represent taking away 4 anchors from a starting position of 12.

12 - (-4)

500

Write an expression to represent taking 5 floats away from a starting position of -4. Find the solution.

-4 - 5 

Solution= -9

Subtracting Decimals

100

-1.2 - 3.5

-4.7

200

-5.2 - (-1.1)

-4.1

300

-13.82 - 1.2

-15.02

400

-2.7 - (-19.9)

17.2

500

15.23 - (-12.81)

28.04

Subtracting Fractions

100

1/5 - (-4/5)

1

200

2/3 - 5/3

-1

300

-4/5 - (-1/10)

-7/10

400

-6/7 - 3/14

-15/14 or - 1 1/14

500

-8/9 - (-2/18)

-7/9

Challengers

100

What is the difference between -9 and 6?

-15

200

What is the distance between -2/5 and 3/2?

19/10, 1 9/10, or 1.9

300

-15.3 - (-13.2) - 27.5

-29.6

400

-8.4 - ( -12.4) - (-9.5)

13.5

500

1/10 - (- 2/5) - 5/8

-1/8