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Maths Gcse Edexcel Foundation

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  1. Scatter-Graphs-And-Correlation Edexcel Foundation
    2 主题
  2. Statistical-Diagrams Edexcel Foundation
    8 主题
  3. Statistics-Toolkit Edexcel Foundation
    7 主题
  4. Tree-Diagrams-And-Combined-Probability Edexcel Foundation
    2 主题
  5. Simple-Probability-Diagrams Edexcel Foundation
    4 主题
  6. Probability-Toolkit Edexcel Foundation
    3 主题
  7. Transformations Edexcel Foundation
    4 主题
  8. Vectors Edexcel Foundation
    3 主题
  9. Volume-And-Surface-Area Edexcel Foundation
    3 主题
  10. Circles-Arcs-And-Sectors Edexcel Foundation
    3 主题
  11. Area-And-Perimeter Edexcel Foundation
    4 主题
  12. Pythagoras-And-Trigonometry Edexcel Foundation
    5 主题
  13. Congruence-Similarity-And-Geometrical-Proof Edexcel Foundation
    5 主题
  14. Bearings-Scale-Drawing-Constructions-And-Loci Edexcel Foundation
    5 主题
  15. 2D-And-3D-Shapes Edexcel Foundation
    4 主题
  16. Angles-In-Polygons-And-Parallel-Lines Edexcel Foundation
    5 主题
  17. Geometry-Toolkit Edexcel Foundation
    4 主题
  18. Exchange-Rates-And-Best-Buys Edexcel Foundation
    2 主题
  19. Standard-And-Compound-Units Edexcel Foundation
    5 主题
  20. Direct-And-Inverse-Proportion Edexcel Foundation
    1 主题
  21. Ratio-Problem-Solving Edexcel Foundation
    2 主题
  22. Ratio-Toolkit Edexcel Foundation
    3 主题
  23. Sequences Edexcel Foundation
    4 主题
  24. Solving-Inequalities Edexcel Foundation
    3 主题
  25. Real-Life-Graphs Edexcel Foundation
    4 主题
  26. Graphs-Of-Functions Edexcel Foundation
    3 主题
  27. Linear-Graphs Edexcel Foundation
    3 主题
  28. Coordinate-Geometry Edexcel Foundation
    3 主题
  29. Functions Edexcel Foundation
    1 主题
  30. Forming-And-Solving-Equations Edexcel Foundation
    2 主题
  31. Simultaneous-Equations Edexcel Foundation
    1 主题
  32. Solving-Quadratic-Equations Edexcel Foundation
    1 主题
  33. Linear-Equations Edexcel Foundation
    3 主题
  34. Algebraic-Reasoning Edexcel Foundation
    1 主题
  35. Rearranging-Formulas Edexcel Foundation
    1 主题
  36. Factorising Edexcel Foundation
    3 主题
  37. Expanding-Brackets Edexcel Foundation
    2 主题
  38. Algebraic-Roots-And-Indices Edexcel Foundation
    1 主题
  39. Algebra-Toolkit Edexcel Foundation
    4 主题
  40. Using-A-Calculator Edexcel Foundation
    1 主题
  41. Exact-Values Edexcel Foundation
    1 主题
  42. Rounding-Estimation-And-Error-Intervals Edexcel Foundation
    4 主题
  43. Fractions-Decimals-And-Percentages Edexcel Foundation
    2 主题
  44. Simple-And-Compound-Interest-Growth-And-Decay Edexcel Foundation
    4 主题
  45. Percentages Edexcel Foundation
    5 主题
  46. Fractions Edexcel Foundation
    6 主题
  47. Powers-Roots-And-Standard-Form Edexcel Foundation
    4 主题
  48. Types-Of-Number-Prime-Factors-Hcf-And-Lcm Edexcel Foundation
    6 主题
  49. Number-Toolkit Edexcel Foundation
    9 主题
课 Progress
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Exam code:1MA1

Multiplying fractions

How do I multiply two fractions?

  • Cancel any factors that are common to both the numerator and the denominator

    • The common factors could be in either of the fractions

    • 3 over 25 cross times 10 over 11 equals 3 over up diagonal strike 25 to the power of 5 cross times up diagonal strike 10 squared over 11 equals 3 over 5 cross times 2 over 11

  • Multiply

    • Multiply the numerators

    • Multiply the denominators

    • 3 over 5 cross times 2 over 11 equals fraction numerator 3 cross times 2 over denominator 5 cross times 11 end fraction equals 6 over 55

  • Cancel any common factors again if possible

How do I multiply two fractions if one is a mixed number?

  • Always convert mixed numbers into improper fractions before multiplying

    • Convert improper fractions back into mixed numbers at the end if required

Worked Example

Find 4 over 15 cross times 25 over 11.

The 15 and 25 can be cancelled before multiplying

<img alt=”fraction numerator 4 over denominator 3 cross times 5 end fraction cross times fraction numerator 5 cross times 5 over denominator 11 end fraction equals fraction numerator 4 over denominator 3 cross times up diagonal strike 5 end fraction cross times fraction numerator up diagonal strike 5 cross times 5 over denominator 11 end fraction equals 4 over 3 cross times 5 over 11″ data-mathml='<math ><semantics><mrow><mfrac ><mn>4</mn><mrow><mn>3</mn><mo>&#215;</mo><mn>5</mn></mrow></mfrac><mo >&#215;</mo><mfrac ><mrow><mn>5</mn><mo>&#215;</mo><mn>5</mn></mrow><mn>11</mn></mfrac><mo >=</mo><mfrac ><mn>4</mn><mrow><mn>3</mn><mo>&#215;</mo

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