AmbifulWorksheets
Practice that never repeats
CBSE · Class 8 · Mathematics

Fractions in Disguise

Standard difficulty · 20 questions · 40 marks

Name: Date: Score: ____ / 40

Show your working for Sections B and C. Answers are on the last page — try every question first!

Section A — Choose the correct answer8 × 1 = 8 marks
1.
12 : 15 in its simplest form is:
  1. 8 : 15
  2. 5 : 4
  3. 5 : 6
  4. 4 : 5
2.
31/50 as a percentage is:
  1. 62%
  2. 6.2%
  3. 3150%
  4. 38%
3.
20% of 40 is:
  1. 20
  2. 80
  3. 60
  4. 8
4.
15% written as a decimal is:
  1. 15
  2. 1.5
  3. 0.15
  4. 0.015
5.
Which ratio is equivalent to 4 : 7?
  1. 20 : 35
  2. 35 : 20
  3. 9 : 12
  4. 20 : 12
6.
An article bought for Rs 392 is sold for Rs 335. This is a:
  1. neither profit nor loss
  2. profit of Rs 57
  3. loss of Rs 727
  4. loss of Rs 57
7.
Simple interest on Rs P at R% per year for T years is:
  1. 100 / (P × R × T)
  2. P + R + T
  3. P × R / T
  4. P × R × T / 100
8.
The ratio of 250 paise to Rs 9 is:
  1. 5 : 18
  2. 9 : 5
  3. 5 : 9
  4. 250 : 9
Section B — Short answer8 × 2 = 16 marks
9.
Find 15% of 280.
10.
What percentage of 140 is 14?
11.
The price of a fan went up from Rs 850 to Rs 935. Find the percentage increase.
12.
If 5 pens cost Rs 110, what is the cost of 9 pens?
13.
Divide Rs 336 between Ravi and Sita in the ratio 1 : 3.
14.
Find the simple interest on Rs 14,500 at 12% per year for 3 years.
15.
A bicycle bought for Rs 6,000 is sold for Rs 7,500. Find the profit percent.
16.
Are 5, 30, 7 and 43 in proportion? Give a reason.
Section C — Word problems4 × 4 = 16 marks
17.
In a class of 50 students, 40% are girls. How many boys are there?
18.
A school bag is marked at Rs 3,000. The shop gives a discount of 15%. What does it cost after the discount?
19.
Neha deposits Rs 5,000 in a bank at 10% simple interest per year. How much will she get back after 2 years?
20.
A car travels 270 km in 5 hours at a steady speed. How far will it travel in 9 hours at the same speed?
AmbifulWorksheets
Practice that never repeats
CBSE · Class 8 · Mathematics

Answer key

Fractions in Disguise · AW-8M-PCT-2026-V1 · For parents — fold back or tear off before handing the sheet to your child.

QAnswerWorking
1(d) 4 : 5divide both by 3
2(a) 62%31/50 × 100 = 62%
3(d) 820/100 × 40
4(c) 0.15divide by 100
5(a) 20 : 35multiply both terms by the same number
6(d) loss of Rs 57SP < CP → loss
7(d) P × R × T / 100—
8(a) 5 : 18Rs 9 = 900 paise; 250 : 900
94215/100 × 280 = 42
1010%14/140 × 100 = 10%
1110%increase = 85; 85/850 × 100 = 10%
12Rs 1981 pen = 110 ÷ 5 = 22; 9 pens = 198
13Ravi Rs 84, Sita Rs 2524 parts = 336, 1 part = 84
14Rs 5,22014500 × 12 × 3 / 100 = 5220
1525%profit = 1500; 1500/6000 × 100 = 25%
16Noproduct of extremes 5 × 43 = 215; product of means 30 × 7 = 210
1730 boysgirls = 40% of 50 = 20; boys = 50 − 20 = 30
18Rs 2,550discount = 15% of 3000 = 450; price = 2550
19Rs 6,000SI = 5000 × 10 × 2/100 = 1000; amount = 5000 + 1000 = 6000
20486 km1 hour = 270 ÷ 5 = 54 km; 9 hours = 486 km