Chapter 01
1. Write the following in percentage form: 0.111. [Multiple Choice]
a. 1.11%
b. 11.1% ✔
c. 111%
d. 1110%
ANS: B
A percent is a fraction with a constant denominator of 100 and is the ratio of the quantity of a substance “per
100” total parts. 0.111 = 11.1/100, which is the same as 11.1%.
2. What is the sum of (–7) + (–8)? [Multiple Choice]
a. –1
b. +1
c. –15 ✔
d. +15
ANS: C
The sum of two negative numbers will be a negative number.
3. If the digit to be dropped is less than 5, then the preceding digit stays the same. [Multiple Choice]
a. True ✔
b. False
ANS: A
If the digit to be dropped is less than 5, then the preceding digit stays the same.
4. Write the following in decimal form: 75%. [Multiple Choice]
a. 0.75 ✔
b. 0.0075
c. 7.5
d. 75.0
,ANS: A
A percent is a fraction with a constant denominator of 100 and is the ratio of the quantity of a substance “per
100” total parts. 75% = 75/100, which is the same as 0.75.
5. Solve the following equation using the rules for rounding numbers and significant figures: (1.4) × (2.5) = ?
[Multiple Choice]
a. 3.5
b. +3.5 ✔
c. 1.1
d. +3.9
ANS: B
When performing multiplication and division calculations, the final result cannot contain more significant figures
than the number in the calculation with the least number of significant figures.
6. If the number 0.5734 is rounded to three significant figures, what will be the new number? [Multiple Choice]
a. 0.573 ✔
b. 0.574
c. 0.5734
d. 5.734
ANS: A
If the first digit to be dropped is less than 5, then the last remaining digit stays the same.
7. What is the sum of (–3) + (+17)? [Multiple Choice]
a. –20
b. +20
c. –14
d. +14 ✔
ANS: D
The sum of a positive number and a negative number will be the sign of the larger number involved in the
addition.
8. If the number 4.625 is rounded to three significant figures, what is the new number? [Multiple Choice]
,a. 4.62 ✔
b. 4.63
c. 4.64
d. 4.65
ANS: A
If the first digit to be dropped is the number 5, the last remaining digit is “rounded” to the next higher number if it
is an odd number. If the last remaining digit is an even number, it is left unchanged.
9. What is the sum of 4.3 + 2.6? [Multiple Choice]
a. 6.9 ✔
b. 9.6
c. 11.2
d. 16.5
ANS: A
The sum of two or more positive numbers will also be a positive number.
10. Solve the following equation using the rules for rounding numbers and significant figures: (5.8) × (9.3) = ?
[Multiple Choice]
a. 54 ✔
b. 53.9
c. 53.94
d. 58
ANS: A
When performing multiplication and division calculations, the final result cannot contain more significant figures
than the number in the calculation with the least number of significant figures.
11. The number 252.13 has how many significant figures? [Multiple Choice]
a. Two
b. Three
c. Four
, d. Five ✔
ANS: D
The number 252.13 contains five significant figures.
12. Solve the following equation using the rules for rounding numbers and significant figures: 0.087 – 0.012 = ?
[Multiple Choice]
a. 0.08
b. 0.075 ✔
c. 0.099
d. 0.10
ANS: B
The final result of an addition or subtraction problem can have as many digits to the right of the decimal point as
the least precise number involved in the problem.
13. Solve the following equation: (+66) – (–14) – (+12) – (+7). [Multiple Choice]
a. –40
b. +47
c. +71 ✔
d. –99
ANS: C
The sum of both positive and negative numbers will be the sign of the larger number involved in the addition.
Remember to sum all of the positive numbers and then separately sum all of the negative numbers. Finally, add
the total sum of the positive numbers with the total sum of the negative numbers to give you the final sum.
14. The number 279.03 has how many significant figures? [Multiple Choice]
a. Two
b. Three
c. Four
d. Five ✔
ANS: D
The number 279.03 has five significant figures. When a number contains a zero or zeroes to the right of the
1. Write the following in percentage form: 0.111. [Multiple Choice]
a. 1.11%
b. 11.1% ✔
c. 111%
d. 1110%
ANS: B
A percent is a fraction with a constant denominator of 100 and is the ratio of the quantity of a substance “per
100” total parts. 0.111 = 11.1/100, which is the same as 11.1%.
2. What is the sum of (–7) + (–8)? [Multiple Choice]
a. –1
b. +1
c. –15 ✔
d. +15
ANS: C
The sum of two negative numbers will be a negative number.
3. If the digit to be dropped is less than 5, then the preceding digit stays the same. [Multiple Choice]
a. True ✔
b. False
ANS: A
If the digit to be dropped is less than 5, then the preceding digit stays the same.
4. Write the following in decimal form: 75%. [Multiple Choice]
a. 0.75 ✔
b. 0.0075
c. 7.5
d. 75.0
,ANS: A
A percent is a fraction with a constant denominator of 100 and is the ratio of the quantity of a substance “per
100” total parts. 75% = 75/100, which is the same as 0.75.
5. Solve the following equation using the rules for rounding numbers and significant figures: (1.4) × (2.5) = ?
[Multiple Choice]
a. 3.5
b. +3.5 ✔
c. 1.1
d. +3.9
ANS: B
When performing multiplication and division calculations, the final result cannot contain more significant figures
than the number in the calculation with the least number of significant figures.
6. If the number 0.5734 is rounded to three significant figures, what will be the new number? [Multiple Choice]
a. 0.573 ✔
b. 0.574
c. 0.5734
d. 5.734
ANS: A
If the first digit to be dropped is less than 5, then the last remaining digit stays the same.
7. What is the sum of (–3) + (+17)? [Multiple Choice]
a. –20
b. +20
c. –14
d. +14 ✔
ANS: D
The sum of a positive number and a negative number will be the sign of the larger number involved in the
addition.
8. If the number 4.625 is rounded to three significant figures, what is the new number? [Multiple Choice]
,a. 4.62 ✔
b. 4.63
c. 4.64
d. 4.65
ANS: A
If the first digit to be dropped is the number 5, the last remaining digit is “rounded” to the next higher number if it
is an odd number. If the last remaining digit is an even number, it is left unchanged.
9. What is the sum of 4.3 + 2.6? [Multiple Choice]
a. 6.9 ✔
b. 9.6
c. 11.2
d. 16.5
ANS: A
The sum of two or more positive numbers will also be a positive number.
10. Solve the following equation using the rules for rounding numbers and significant figures: (5.8) × (9.3) = ?
[Multiple Choice]
a. 54 ✔
b. 53.9
c. 53.94
d. 58
ANS: A
When performing multiplication and division calculations, the final result cannot contain more significant figures
than the number in the calculation with the least number of significant figures.
11. The number 252.13 has how many significant figures? [Multiple Choice]
a. Two
b. Three
c. Four
, d. Five ✔
ANS: D
The number 252.13 contains five significant figures.
12. Solve the following equation using the rules for rounding numbers and significant figures: 0.087 – 0.012 = ?
[Multiple Choice]
a. 0.08
b. 0.075 ✔
c. 0.099
d. 0.10
ANS: B
The final result of an addition or subtraction problem can have as many digits to the right of the decimal point as
the least precise number involved in the problem.
13. Solve the following equation: (+66) – (–14) – (+12) – (+7). [Multiple Choice]
a. –40
b. +47
c. +71 ✔
d. –99
ANS: C
The sum of both positive and negative numbers will be the sign of the larger number involved in the addition.
Remember to sum all of the positive numbers and then separately sum all of the negative numbers. Finally, add
the total sum of the positive numbers with the total sum of the negative numbers to give you the final sum.
14. The number 279.03 has how many significant figures? [Multiple Choice]
a. Two
b. Three
c. Four
d. Five ✔
ANS: D
The number 279.03 has five significant figures. When a number contains a zero or zeroes to the right of the
