Answer :
A. Tick (✓) the correct answer:
The decimal form of 15% is:
- (i) 0.15 ✓
- Explanation: To convert a percentage to a decimal, divide by 100. So, 15% = [tex]\frac{15}{100} = 0.15[/tex].
The fraction form of 25% is:
- (i) [tex]\frac{1}{4}[/tex] ✓
- Explanation: 25% as a fraction is [tex]\frac{25}{100}[/tex], which simplifies to [tex]\frac{1}{4}[/tex].
What percent of 8 is 6?
- (iii) 75% ✓
- Explanation: [tex]\frac{6}{8} \times 100 = 75\%[/tex].
B. Write as a decimal:
3%
- 0.03
- Explanation: 3% = [tex]\frac{3}{100} = 0.03[/tex].
2.071%
- 0.02071
- Explanation: 2.071% = [tex]\frac{2.071}{100} = 0.02071[/tex].
C. Write as percent:
0.16
- 16%
- Explanation: 0.16 [tex]\times 100 = 16\%[/tex].
0.93
- 93%
- Explanation: 0.93 [tex]\times 100 = 93\%[/tex].
D. Express the following as percentages:
[tex]\frac{5}{9}[/tex]
- 55.56%
- Explanation: [tex]\frac{5}{9} \times 100 \approx 55.56\%[/tex].
[tex]\frac{35}{50}[/tex]
- 70%
- Explanation: [tex]\frac{35}{50} \times 100 = 70\%[/tex].
E. Find 150% of 82?
- 123
- Explanation: 150% of 82 = [tex]1.5 \times 82 = 123[/tex].
F. 16% of 50 is what?
- 8
- Explanation: 16% of 50 = [tex]0.16 \times 50 = 8[/tex].
G. What is 80% of 18.4?
- 14.72
- Explanation: 80% of 18.4 = [tex]0.8 \times 18.4 = 14.72[/tex].
H. What is 6% of 2500?
- 150
- Explanation: 6% of 2500 = [tex]0.06 \times 2500 = 150[/tex].
I. What % of:
12 is 8 =
- 66.67%
- Explanation: [tex]\frac{8}{12} \times 100 \approx 66.67\%[/tex].
18 is 4.5 =
- 25%
- Explanation: [tex]\frac{4.5}{18} \times 100 = 25\%[/tex].
18 is 27 =
- 150%
- Explanation: [tex]\frac{27}{18} \times 100 = 150\%[/tex].
15 is 3000 =
- 20000%
- Explanation: [tex]\frac{3000}{15} \times 100 = 20000\%[/tex].
J. 4% of 625 is what number?
- 25
- Explanation: 4% of 625 = [tex]0.04 \times 625 = 25[/tex].
K. A student correctly answered 32 out of 40 questions in a test? What percent of the questions did the student answer correctly?
- 80%
- Explanation: [tex]\frac{32}{40} \times 100 = 80\%[/tex].
