JAMB Mathematics questions

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

1. Question 101· Fractions, decimals, approximations and percentages· JAMB

   Evaluate 2½ − 1¾.

   • A¾
   • B1¼
   • C½
   • D1¾

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2. Question 102· Fractions, decimals, approximations and percentages· JAMB

   Evaluate (0.0024 × 0.15) ÷ 0.0012.

   • A30
   • B3
   • C0.03
   • D0.3

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3. Question 103· Fractions, decimals, approximations and percentages· JAMB

   A length of 5 cm is measured as 4.8 cm. Find the percentage error.

   • A4.2%
   • B2%
   • C0.2%
   • D4%

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4. Question 104· Fractions, decimals, approximations and percentages· JAMB

   Find the percentage error, to 2 decimal places, when 0.0396 is approximated as 0.04.

   • A1.01%
   • B1.00%
   • C0.40%
   • D4.04%

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5. Question 105· Fractions, decimals, approximations and percentages· JAMB

   Express 0.00456 in standard form.

   • A4.56 × 10^-2
   • B45.6 × 10^-4
   • C4.56 × 10^-3
   • D4.56 × 10^3

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6. Question 106· Fractions, decimals, approximations and percentages· JAMB

   A man saves 15% of his monthly salary of ₦80,000. How much does he save each month?

   • A₦68,000
   • B₦15,000
   • C₦1,200
   • D₦12,000

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7. Question 107· Fractions, decimals, approximations and percentages· JAMB

   Simplify (3/4 of 2⅔) ÷ 1⅓.

   • A2/3
   • B3/2
   • C2
   • D8/9

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8. Question 108· Fractions, decimals, approximations and percentages· JAMB

   Express 0.06724 correct to two significant figures.

   • A0.0672
   • B0.068
   • C0.07
   • D0.067

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9. Question 109· Fractions, decimals, approximations and percentages· JAMB

   Simplify 1¼ + 2⅓.

   • A3 2/7
   • B3 7/12
   • C3½
   • D4 1/12

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10. Question 110· Fractions, decimals, approximations and percentages· JAMB

    Find the compound interest on ₦10,000 at 10% per annum for 2 years.

    • A₦2,100
    • B₦2,000
    • C₦12,100
    • D₦1,100

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11. Question 111· Fractions, decimals, approximations and percentages· JAMB

    Express the recurring decimal 0.666… as a fraction.

    • A3/5
    • B2/3
    • C6/10
    • D5/6

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12. Question 112· Fractions, decimals, approximations and percentages· JAMB

    Find the simple interest on ₦20,000 at 5% per annum for 3 years.

    • A₦1,000
    • B₦3,000
    • C₦300
    • D₦6,000

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13. Question 113· Fractions, decimals, approximations and percentages· JAMB

    Share ₦4,500 between Ade and Bisi in the ratio 4 : 5. How much does Ade get?

    • A₦900
    • B₦2,500
    • C₦1,800
    • D₦2,000

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14. Question 114· Fractions, decimals, approximations and percentages· JAMB

    A man spends 1/4 of his salary on rent and 2/5 of the remainder on food. What fraction of his salary is left?

    • A7/20
    • B9/20
    • C11/20
    • D3/10

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15. Question 115· Fractions, decimals, approximations and percentages· JAMB

    Express 0.00467 correct to one significant figure.

    • A0.004
    • B0.005
    • C0.0047
    • D0.01

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16. Question 116· Fractions, decimals, approximations and percentages· JAMB

    A man sold a radio for ₦13,800 at a loss of 8%. Find the cost price.

    • A₦12,696
    • B₦14,904
    • C₦15,000
    • D₦12,000

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17. Question 117· Fractions, decimals, approximations and percentages· JAMB

    Find 2.5% of ₦8,000.

    • A₦320
    • B₦20
    • C₦2,000
    • D₦200

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18. Question 118· 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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19. Question 119· 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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20. Question 120· 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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