Pre-Algebra Unit 1

Question 1

Select all of the symbols that would make the comparison true.

−7 ___ −4

1. <
2. >
3. ≤
4. ≥
5. =
6. ≠

Answer 1

1 And 3 and 6

Question 2

Select all of the symbols that would make the comparison true.

2.5 ___ 2.05

1. <
2. >
3. ≤
4. ≥
5. =
6. ≠

Answer 2

2 And 4 and 6

Question 3

Select all of the symbols that would make the comparison true.

−|−9| ___ −9

1. <
2. >
3. ≤
4. ≥
5. =
6. ≠

Answer 3

3 and 4 and 5

Question 4

All of the following are rational numbers except _____.

1. 2/3
2. 1.33…
3. −16
4. 3.14159…

Answer 4

Number 4

Question 5

Which of the following is a true statement?

1. The opposite of −45 is equal to the absolute value of −45.
2. The opposite of 45 is equal to the absolute value of 45.
3. The opposite of 45 is equal to the absolute value of −45.
4. The opposite of −45 is not equal to the absolute value of 45.

Answer 5

Number 1

Question 6

Which of the following statements is false?

1. If a number is a natural number, then it is rational.
2. If a number is a whole number, then it is rational.
3. If a number is a fraction, then it is rational.
4. If a number is an integer, then it is irrational.

Answer 6

Number 4

Question 7

The distance between -7 and 2 on the number line is _____.

1. 5
2. -5
3. 9
4. 10

Answer 7

Number 3

Question 8

PI is an example of _____.

1. a rational number
2. an irrational number
3. an integer
4. a natural number

Answer 8

Number 2

Question 9

5 ___ Square roof of 18

=
<
>

Answer 9

5 > 4

Question 10

3 -1 ___ 1/4

=
<
>

Answer 10

1/3 > 1/4

Question 11

Which of the following statements is not true?

1. 1.7 > 1
2. 3/4 ≤ 7/8
3. -1 1/5 < -1.5
4. 0.01 < 0.1

Answer 11

3. -1 1/5 < -1.5

Question 12

Which of the following numbers is irrational?

1. -0.3
2. square root of 3
3. 1/3
4. 0.1313..

Answer 12

square root of 3

Question 13

Simplify 57 - 6 squared ÷ (2 + 1) · 4.

1. 9
2. 28
3. 41
4. 54

Answer 13

1. 9 You work left to right division and multiplication go before addition and subtraction

Question 14

In scientific notation 1/5 or 0.2

Answer 14

2 X 10 (-1)

Question 15

Which of the following expressions cannot be written as an integer?

1. square root of 49
2. -3 (0)
3. 1.2 × 10 (-2)
4. 18/3

Answer 15

Integers include both positive and negative whole numbers

1. 7
2. -1
3. .012 IS NOT AN INTEGER
4. 6

Question 16

What is square root of 48 in simplified form?

1. 24
2. 4 square root of 3
3. 2 square root of 12
4. square root of 48 can’t be simplified.

Answer 16

3. 4 square root of 3

Question 17

Ninety-two is all of the following except _____.

1. a constant
2. a term
3. an expression
4. a variable

Answer 17

4. A variable