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JAMB Mathematics · Number and Numeration

Fractions, Decimals, Approximations and Percentages: JAMB Mathematics Past Questions and Answers

What the JAMB syllabus covers in Fractions, Decimals, Approximations and Percentages

Our summary: Fractions, decimals and rounding, plus everyday money and ratio problems like interest, profit, loss and VAT.

  • Fractions and decimals
  • Significant figures
  • Decimal places
  • Percentage errors
  • Simple interest
  • Profit and loss percent
  • Ratio, proportion and rate
  • Shares and value added tax (VAT)

Objectives

  • Perform basic operations (×,+,−,÷\times, +, -, \div) on fractions and decimals
  • Express to specified number of significant figures and decimal places
  • Calculate simple interest, profit and loss per cent; ratio, proportion, rate and percentage error
  • Solve problems involving share and VAT

Syllabus content © The Joint Admissions and Matriculation Board (UTME).

JAMB Mathematics questions on Fractions, Decimals, Approximations and Percentages

  1. JAMB 2025An amount of 600,000.00 was realized when a principal y was saved for 5% simple interest for 4 years, find the value of y
  2. JAMB 2024The ratio of men to women in a 20-member committee is 3:1. How many women must be added to the committee to make the ratio of men to women 3:2?
  3. JAMB 2024Find the amount if simple interest is paid yearly at 5% per annum for 3 years, on a principal of 200,000.00
  4. JAMB 2023Two numbers are respectively 35% and 80% more than a third number. The ratio of the two numbers is
  5. JAMB 2023If a car runs at a constant speed and takes 4.5 hrs to run a distance of 225 km, what time will it take to run 150 km?
  6. JAMB 2023It takes 12 men 8 hours a day to finish a piece of work in 4 days. In how many days will it take 4 men working 16 hours a day to complete the same piece of…
  7. JAMB 2023Evaluate 5/8 - 3/4 ÷ 5/12 × 1/4
  8. JAMB 2023A student is using a graduated cylinder to measure the volume of water and reports a reading of 18 mL. The teacher reports the value as 18.4 mL. What is the…
  9. JAMB 2023The population of a village decreased from 1,230 to 1,040 due to breakout of an epidemic. What is the percentage decrease in the population?
  10. JAMB 2023At simple interest, a man made a deposit of some money in the bank. The amount in his bank account after 10 years is three times the money deposited. If the…
  11. JAMB 2023Bello buys an old bicycle for ₦9,200.00 and spends ₦1,500.00 on its repairs. If he sells the bicycle for ₦13,400.00, his gain percent is
  12. JAMB 2023A man sells different brands of an items. ^1/ 9 of the items he has in his shop are from Brand A, ^5/ 8 of the remainder are from Brand B and the rest are from…
  13. JAMB 2023A rectangular plot of land has sides with lengths of 38 m and 52 m corrected to the nearest m. Find the range of the possible values of the area of the…
  14. JAMB 2023An article when sold for ₦230.00 makes a 15% profit. Find the profit or loss % if it was sold for ₦180.00
  15. JAMB 2023A student pilot was required to fly to an airport and then return as part of his flight training. The average speed to the airport was 120 km/h, and the average…
  16. JAMB 2023Give the number of significant figures of the population of a town which has approximately 5,020,700 people
  17. JAMB 2023Find the compound interest (CI) on ₦15,700 for 2 years at 8% per annum compounded annually.
  18. JAMB 2022A poultry farmer realized 200 eggs from his birds and sold 5 1/2 crates of eggs. What percentages of eggs are left?
  19. JAMB 2022If a dress is sold for 3800.00 at 20% discount. what is its original price?
  20. JAMB 2022What will be the result obtained when the numerator of 96/50 is decreased by 37.5% and its denominator decreased by 20%.
  21. JAMB 2021At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50?
  22. JAMB 2021Three brothers in a business deal share the profit at the end of a contract. The first received 1/3 of the profit and the second 2/3 of the remainder. If the…
  23. JAMB 2021A car travels from calabar to Enugu, a distance of P km with an average speed of U km per hour and continues to benin, a distance of Q km, with an average speed…
  24. JAMB 2021Musa borrows N10.00 at 2% per month simple interest and repays N8.00 after 4 months. How much does he still owe?
  25. JAMB 2021Three children shared a basket of mangoes in such a way that the first child took 1/4 of the mangoes and the second 3/4 of the remainder. What fraction of the…
  26. JAMB 2021Simplify and express in standard form 0.00275 × 0.00640/0.025 × 0.08
  27. JAMB 2020Reach each number to two significant figures and then evaluate 0.02174 × 1.2047/0.023789
  28. JAMB 2020If N225.00 yields N27.00 in x years simple interest at the rate of 4% per annum, find x.
  29. JAMB 2020Find the simple interest rate percent annum at which N1000 accumulates to N1240 in 3 years.
  30. JAMB 2020Four boys and ten girls can cut a field first in 5 hours. If the boys work at 5/4 the rate at which the girls work, how many boys will be needed to cut the…
  31. JAMB 2019Find the value of (0.5436)^3/0.017 × 0.219 to 3 significant figures.
  32. JAMB 2019The simple interest on ₦8550 for 3 years at x% per annum is ₦4890. Calculate the value of x to the nearest whole number.
  33. JAMB 20192/3 ÷ 4/5 1/4 + 3/5 - 1/3
  34. JAMB 2019Express (0.0439 ÷ 3.62) as a fraction.
  35. JAMB 2019Evaluate (6/0.32 ÷ 2/0.084)^ -1 correct to 1 decimal place.
  36. JAMB 2019A man bought a car newly for ₦1,250,000. He had a crash with the car and later sold it at the rate of ₦1,085,000. What is the percentage gain or loss of the…
  37. JAMB 2019The weight of a day-old chick was measured to be 0.21g. If the actual weight of the chick is 0.18g, what was the percentage error in the measurement?
  38. JAMB 2019A factory worker earns ₦50,000 per month out of which he spends 15% on his children's education, ₦13,600 on Food, 3% on electricity and uses the rest for his…
  39. JAMB 2019Tade bought 200 mangoes at 4 for ₦2.50. 30 out of the mangoes got spoilt and the remaining were sold at 2 for ₦2.40. Find the percentage profit or loss.
  40. JAMB 2018Two sisters, Taiwo and Kehinde, own a store. The ratio of Taiwo's share to Kehinde's is 11:9. Later Kehinde sells 2/3 of her share to Taiwo for N720.00. Find…
  41. JAMB 2018If the simple interest on a sum of money invested at 3% per annum for 2 1/2 years is N123, find the principal.
  42. JAMB 2018A machine valued at N20,000 depreciates by 10% every year. What will be the value of the machine at the end of two years?
  43. JAMB 2018A boy walks 800m in 20 minutes. Calculate his average speed in Km/H
  44. JAMB 2018Divide the L.C.M of 48, 64 and 80 by their H.C.F
  45. JAMB 2018A school girl spends 1/4 of her pocket money on books and 1/3 on dress. What fraction remains?
  46. JAMB 20180.00256 × 0.0064/0.025 × 0.08
  47. JAMB 2018Convert 0.04945 to two significant figures
  48. JAMB 2018A car uses one litre of petrol for every 14km. If one litre of petrol cost N63.00, how far can the car go with N900.00 worth of petrol?
  49. JAMB 2018Express 495g as a percentage of 16.5kg
  50. JAMB 2018Approximate 0.9875 to 1 decimal place.

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Years with Fractions, Decimals, Approximations and Percentages questions in DeeepSolve's question bank

From the past questions DeeepSolve holds, not a count of everything the exam body has set.

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