### Exercises

1.

Olga is correct. The absolute value will either be greater, when a negative number changes to a positive, or equal, when a positive number remains positive.

1 answ
2.

A is negative, and B is positive, because if the numbers are opposites, one has to be negative and one has to be positive. Since B is given as greater than A, and a positive is always greater than a negative, B must be positive.

1 answ
3.

a) 10.4

b) -10.4

1 answ
4.

a) 7

b) 7

1 answ
5.

a) 21
b) -21

1 answ
6.

1 answ
7.

1 answ
8.

1 answ
9.

1 answ
10.

1 answ
11.

1 answ
12.

1 answ
13.

True

1 answ
14.

True

1 answ
15.

False

1 answ
16.

True

1 answ
17.

False

1 answ
18.

True

1 answ
19.

True

1 answ
20.

True

1 answ
21.

12

1 answ
22.

1 answ
23.

10

1 answ
24.

5

1 answ
25.

0

1 answ
26.

10

1 answ
27.

2

1 answ
28.

5

1 answ
29.

0

1 answ
30.

14

1 answ
31.

1 answ
32.

True

1 answ
33.

1 answ
34.

True

1 answ
35.

1 answ
36.

1 answ
37.

1 answ
38.

1 answ
39.

1 answ
40.

1 answ
41.

Positive

1 answ
42.

Negative twenty is less than negative three.

1 answ
43.

Negative four is less than zero.

1 answ
44.

Negative nine is greater than or equal to negative ninety.

1 answ
45.

1 answ
46.

1 answ
47.

1 answ
48.

2 answ