Home › Worksheets › IGCSE Year 9 Math › Percentages and Simple Interest Prepared by Mohsim Digital Education
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Date: _________________________
Score: _______ / 40
0.35 written as a percentage is 35% and increasing 200 by 15% gives 230, so this Year 9 sheet opens with decimal-to-percent and percentage increase. The key records 70, 20%, a 100-dollar and a 60-dollar answer among the money results.
Key Takeaways
0.35 = 35% (Q1).
Increasing 200 by 15% gives 230 (Q2).
Q5 records 20% as a percentage answer.
Section A: Multiple Choice Questions (1 Mark Each)
Choose the correct option for each question.
1.
Write 0.35 as a percentage.
(a) 3.5% (b) 35% (c) 0.35% (d) 350%
2.
Increase 200 by 15%.
(a) 215 (b) 230 (c) 220 (d) 250
3.
Find 20% of 350.
(a) 35 (b) 7 (c) 70 (d) 700
4.
An item costs 80 dollars after a 20% discount. What was the original price?
(a) 96 dollars (b) 64 dollars (c) 160 dollars (d) 100 dollars
5.
Express 12 out of 60 as a percentage.
(a) 20% (b) 12% (c) 5% (d) 50%
6.
Find the simple interest on 500 dollars at 4% per year for 3 years.
(a) 60 dollars (b) 120 dollars (c) 20 dollars (d) 600 dollars
Section B: Short Answer Type Questions (2 Marks Each)
Show all steps clearly.
7.
Write ¾ as a percentage.
8.
Decrease 80 by 25%.
9.
Find 30% of 150.
10.
Write 0.08 as a percentage.
11.
A coat priced at 120 dollars is reduced by 15%. Find the new price.
12.
Convert 45% to a fraction in its simplest form.
13.
In a class of 25 students, 16 are girls. What percentage are boys?
14.
Find 7% of 300.
Section C: Numericals & Word Problems (3 Marks Each)
Apply the concepts to solve the problems. Show all working.
15.
A laptop costs 800 dollars and is reduced by 12% in a sale. Find the sale price.
16.
Kim invests 2000 dollars at 3% simple interest per year for 5 years. Find the total interest earned.
17.
A population of 1200 increases by 10% each year. Find the population after 2 years.
18.
In a test, Sam scored 42 out of 60. Express this score as a percentage.
19.
A salary of 40000 dollars increases by 8%. Find the new salary.
20.
A phone originally costs 600 dollars and now costs 450 dollars. Find the percentage decrease.
Answer Key
1. b) 35%
2. b) 230
3. c) 70
4. d) 100 dollars
5. a) 20%
6. a) 60 dollars
7. Refer to solution guide.
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End of Worksheet
People Also Ask
What is 0.35 as a percentage?
35%, option (b) in this worksheet (Q1).
What is 200 increased by 15%?
230, option (b) in this worksheet (Q2).
What percentage is 20 out of 100?
20%, option (a) in this worksheet (Q5).