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Mastering Percentages: Percentage Conversion Practice with Test Scores

Learn to convert test scores into percentages for comparison, with examples and tips. Practice converting scores out of 40 and 16 into percentages. Includes step-by-step guide and additional practice questions.

jamesross
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Mastering Percentages: Percentage Conversion Practice with Test Scores

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  1. Hot Shots I am learning to work out percentages of amounts. % Percentages are out of 100. 100

  2. Tim got 18 out of 25 in a test and Scott got 45 out of 50 in a test. Who got the best result ? We need to change the tests into percentages so that we can compare them. Let’s start by changing Tim’s score (18 out of 25) into a percentage. Multiplying the numerator and denominator by 4 will give us an equivalent fraction out of 100 X 4 72 18 0 50 25 75 100 72% X 4

  3. Now we need to turn Scott’s score (45 out of 50 into a percentage). Multiplying the numerator and denominator by 2 will give us an equivalent fraction out of 100 X 2 45 90 0 50 25 75 100 90% X 2 Tim scored 72% and Scott scored 90%. It is now easy to see that Scott got the best result.

  4. Room 13 completed a maths test out of 40. Help the teacher convert some student scores into percentages. If the test is out of 40. What would 50% be? What would 25% be? Tip: 25% is half of a half. What would 75% be? Tip: a half plus one quarter. 10 0 20 40 30 0% 50% 25% 75% 100% The number line above is called a double number line. You can see it is very helpful to imagine when converting scores into percentages.

  5. Room 9 completed a science quiz which was out of 16. Help the teacher convert some student scores into percentages. If the test is out of 16. What would 50% be? What would 25% be? Tip: 25% is half of a half. What would 75% be? Tip: a half plus one quarter. What would a score of 2 out of 16 be as a percentage? You can see that 2 is exactly halfway between 0 and 25%. Half of 25% is 12.5%. 4 0 8 2 16 12 0% 50% 25% 12.5% 75% 100%

  6. Now try these questions on your own. Change these fractions into percentages Click again when you have worked out all your answers. 33% 6) 7) 8) 9) 10) 25% 1) 2) 3) 4) 5) 20% 50% 48% 50% 150% 25% 75% 20% Need some more practise? Try pg34 & 35 of Teacher Tools Fractions, Decimals and Percentages Book Numeracy resources

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