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Elementary and Intermediate Algebra
Mark Dugopolski, Southeastern Louisiana University
Real Numbers and Their Properties
Addition and Subtraction of Real Numbers
Warm-Ups
1
-9 + 8 = -1
A)
TRUE
B)
FALSE
2
(-2) + (-4) = -6
A)
TRUE
B)
FALSE
3
0 - 7 = -7
A)
TRUE
B)
FALSE
4
5 - (-2) = 3
A)
TRUE
B)
FALSE
5
-5 - (-2) = -7
A)
TRUE
B)
FALSE
6
The additive inverse of -3 is 0.
A)
TRUE
B)
FALSE
7
If b is a negative number, then -b is a positive number.
A)
TRUE
B)
FALSE
8
The sum of a positive number and a negative number is a negative number.
A)
TRUE
B)
FALSE
9
The result of a subtracted from b is the same as b plus the opposite of a.
A)
TRUE
B)
FALSE
10
If a and b are negative numbers, then a - b is a negative number.
A)
TRUE
B)
FALSE
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