Enter Title

Adding Integer

100

2 + 23

25

200

15 + (-23)

-8

300

-14 + -18

-32

400

52 + (-31)

21

500

-16 + 17 + (-35)

-34

Subtracting Integers

100

41 - 9

32

200

-15 - 16

-31

300

31 - (-47)

78

400

-18 - (-24)

6

500

-123 - (-79) - (3)

-47

Adding Rational Numbers

100

3.4 + 5.4

8.8

200

6.1 + (-4.5)

1.6

300

(-2/3) + (-2/3)

-4/3

400

1/2 + (-4/5)

-3/10

500

1/4 + (-4/3) + 1/2

-7/12

Subtracting Rational Numbers

100

3/4 - 3/4

0

200

4/5 - 2/3

2/15

300

1/2 - (-3/4)

5/4 or 1 1/4

400

-14.3 - 12.04

-26.34

500

-3/5 - (1/2) - (-4/5)

-3/10

Rules

100

A positive plus a positive equals a...? 

Positive number

200

A negative plus a negative equals a...?

negative number

300

Will adding 10 + (-15) = a positive or negative answer?

negative because you have more negative values than positive values

400

Will subtracting 5 - (-9) = a positive or negative answer?

Positive because 5 - (-9) is the same as 5 + 9. Also, minus a negative means you go right on the number line

500

subtracting -6 - 15 = a positive or negative answer?

A negative because you start negative and move more into the negative.