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Oak MathsTest · Maths

Multiplicative relationships and direct proportion

The starter and exit quiz of the lesson “Multiplicative relationships and direct proportion”, from the unit “Understanding multiplicative relationships: percentages and proportionality” (Year 8 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. When you use a ratio table, you are using __________ relationship.
  2. 100% = 40 and 70% = 28. The percentage change is ___%.
  3. The cost of a laptop increases from £540 to £702. What is the percentage change?
  4. Jun thinks of a number and increases it by a percentage. The number Jun thought of was 80 and his new number is 100. Jun has increased his original number by ___%.
  5. Jacob’s score on a game increases from 2450 to 2744. The percentage that Jacob's original score has changed by is ___%.
  6. A reduced fat bag of crisps contains 3 g of fat. The normal bag of crisps contains 2 g more of fat. The percentage that the fat has been reduced by is ___%.
  7. Two variables are in direct proportion if they have a ___ multiplicative relationship.
  8. Which of the following show a directly proportional relationship between A and B?
  9. A and B are directly proportional. The missing value of B is ___.
  10. A and B are directly proportional. The missing value of B is ___.
  11. The graph shows the relationship between cost and number of boxes bought. Can you spend exactly £5 on boxes?
  12. This graph shows that A and B are in direct proportion. The proportional relationship between A and B is B = A × ___.

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Multiplicative relationships and direct proportion · Examplary