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OCR GCSE Mathematics Number overview quiz quiz

14questions. Pick an answer and you'll see why right away.

  1. Work out βˆ’5+2Γ—(βˆ’6)-5 + 2 \times (-6).

  2. Work out βˆ’8βˆ’(βˆ’3)-8 - (-3).

  3. Write 120120 as a product of its prime factors.

  4. Find the HCF of 2424 and 3636.

  5. Work out 34+23\tfrac{3}{4} + \tfrac{2}{3}.

  6. Work out 58Γ·14\tfrac{5}{8} \div \tfrac{1}{4}.

  7. Find 15%15\% of 240240.

  8. Write 720\tfrac{7}{20} as a percentage.

  9. Write 0.000420.00042 in standard form.

  10. Work out (3Γ—105)Γ—(2Γ—103)(3 \times 10^{5}) \times (2 \times 10^{3}) in standard form.

  11. Work out 82/38^{2/3}.

  12. Simplify 5βˆ’25^{-2}.

  13. Simplify 48\sqrt{48} in the form aba\sqrt{b}.

  14. A length is 6.26.2 cm to the nearest 0.10.1 cm. What is its upper bound?