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Minus 3 plus 8 equals 5.

# Numbers - Negative Numbers - Addition and Subtraction

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Addition and subtraction of negative numbers involves those that are below zero. Integers are whole numbers. They can be positive or negative. Positive numbers are above zero. Negative numbers are below zero and are written with the minus sign in front of the digits.

1.
Which of the following numbers is less than -3?
0
-1
-2
-4
2.
What is 8 + -3?
-11
0
5
11
3.
What is -4 - -17?
-21
-13
13
21
When two minus signs occur together, they act as a plus sign
4.
What is -66 + -33 - -22?
-77
-44
44
77
On a number line, count to the left for negative numbers and right for positive numbers
5.
What is 4 - -17?
-21
-13
13
21
You could re-write the calculation as 4 + 17
6.
What is 50 - -11 + -3?
39
41
58
61
7.
What is -3 + 8?
-11
0
3
5
8.
What is -21 + 14 + -9?
-18
-16
18
35
It's useful to use a number line with 0 in the center
9.
What is -4 - 17?
-21
-13
13
21
10.
Which of the following numbers is more than -74?
-73
-75
-100
-174
Author:  Frank Evans