JAMB and WAEC Mathematics questions: Fractions, decimals, approximations and percentages

56 questions with answers and explanations. Tap an option to check yourself.

1. Question 41· Fractions, decimals, approximations and percentages· WAEC

   Share ₦4,500 between Ada and Bola in the ratio 2 : 3. Find Bola's share.

   • A₦1,800
   • B₦3,000
   • C₦2,250
   • D₦2,700

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   Explanation and discussion

2. Question 42· Fractions, decimals, approximations and percentages· WAEC

   Evaluate 0.25 × 0.4 ÷ 0.02.

   • A5
   • B0.5
   • C50
   • D0.05

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   Explanation and discussion

3. Question 43· Fractions, decimals, approximations and percentages· WAEC

   Find the amount after 2 years when ₦10,000 is invested at 10% per annum compound interest.

   • A₦11,000
   • B₦12,000
   • C₦12,100
   • D₦12,210

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4. Question 44· Fractions, decimals, approximations and percentages· WAEC

   Express 3/8 as a percentage.

   • A38%
   • B37.5%
   • C30.8%
   • D3.75%

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5. Question 45· Fractions, decimals, approximations and percentages· JAMB

   Correct 3.14159 to three decimal places.

   • A3.142
   • B3.141
   • C3.14
   • D3.1416

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   Explanation and discussion

6. Question 46· Fractions, decimals, approximations and percentages· WAEC

   Divide ₦36,000 among Ada, Bola and Chidi in the ratio 2 : 3 : 4. Bola's share is

   • A₦16,000
   • B₦8,000
   • C₦12,000
   • D₦9,000

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   Explanation and discussion

7. Question 47· Fractions, decimals, approximations and percentages· WAEC

   Find the simple interest on ₦45,000 for 4 years at 6% per annum.

   • A₦10,800
   • B₦2,700
   • C₦12,000
   • D₦9,600

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8. Question 48· Fractions, decimals, approximations and percentages· WAEC

   The price of a shirt is reduced by 20% to ₦4,800. The original price was

   • A₦6,400
   • B₦5,760
   • C₦5,600
   • D₦6,000

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9. Question 49· Fractions, decimals, approximations and percentages· JAMB

   A car bought for ₦4,500,000 loses 20% of its value each year. What is it worth after 2 years?

   • A₦3,600,000
   • B₦2,700,000
   • C₦2,880,000
   • D₦2,520,000

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   Explanation and discussion

10. Question 50· Fractions, decimals, approximations and percentages· JAMB

    A trader buys goods for ₦12,000 and sells them for ₦15,000. Find the percentage profit.

    • A20%
    • B25%
    • C30%
    • D15%

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11. Question 51· Fractions, decimals, approximations and percentages· JAMB

    A shirt marked ₦4,000 is sold at a discount of 15%. What is the selling price?

    • A₦3,400
    • B₦3,600
    • C₦3,850
    • D₦3,000

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    Explanation and discussion

12. Question 52· Fractions, decimals, approximations and percentages· JAMB

    The ratio of boys to girls in a class is 5 : 3. If there are 15 girls, how many students are in the class?

    • A45
    • B25
    • C40
    • D24

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13. Question 53· Fractions, decimals, approximations and percentages· WAEC

    Write 0.0000306 in standard form.

    • A3.06 × 10⁻⁵
    • B3.06 × 10⁻⁶
    • C3.6 × 10⁻⁵
    • D3.06 × 10⁵

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14. Question 54· Fractions, decimals, approximations and percentages· WAEC

    Simplify 1 3/4 + 2 1/3.

    • A4 1/12
    • B3 4/7
    • C4 1/7
    • D3 1/12

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15. Question 55· Fractions, decimals, approximations and percentages· JAMB

    A car bought for ₦2,000,000 depreciates by 10% of its value each year. Find its value after 2 years.

    • A₦1,800,000
    • B₦1,600,000
    • C₦1,620,000
    • D₦1,640,000

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16. Question 56· Fractions, decimals, approximations and percentages· JAMB

    Round 0.048573 to three significant figures.

    • A0.0486
    • B0.048
    • C0.049
    • D0.0485

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    Explanation and discussion