中文（繁體）
中文（简体）
English
Primary Maths: Fractions, Decimals and Percentages (Paper 3 (challenge))
Primary Maths: Fractions, Decimals and Percentages (Paper 3 (challenge))
This paper practises reverse problems, mixed operations and percentage increase.
Direct answers Always check by multiplying the answer back by the percentage.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: Primary Maths: Fractions, Decimals and Percentages |
| Level | P5 |
02 Questions (10 items)
- FoundationWrite 0.65 as a fraction in simplest form.
- Foundation32 is what percentage of 80?
- FoundationConvert one and three quarters to a decimal and a percentage.
- IntermediateWhat is 35% of 480 dollars?
- IntermediateAn item sells for 90 dollars, which is 75% of its original price. What is the original price?
- IntermediateWork out 0.375 plus 25%, as a decimal and as a fraction.
- ChallengeConvert one sixth to a percentage, correct to one decimal place.
- ChallengeArrange two thirds, 0.65 and 66% from smallest to largest.
- ChallengeA quantity rises from 45 to 54. What is the percentage increase?
- Error redoA student writes three eighths as 0.38. What is the correct decimal?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 13/20 | 0.65 is 65 over 100, and dividing both by 5 gives 13 over 20. |
| 2 | 40% | 32 divided by 80 is 0.4, which is 40%. |
| 3 | 1.75 and 175% | Three quarters is 0.75, plus one gives 1.75, which is 175%. |
| 4 | 168 dollars | 480 times 0.35 is 168. |
| 5 | 120 dollars | 90 divided by 0.75 is 120, and 120 times 0.75 is 90. |
| 6 | 0.625 and 5/8 | 25% is 0.25, so 0.375 plus 0.25 is 0.625, which is 5 over 8. |
| 7 | 16.7% | One divided by six is 0.1666…, which is 16.7 to one decimal place. |
| 8 | 0.65, 66%, two thirds | As decimals they are 0.65, 0.66 and 0.6667. |
| 9 | 20% | The rise is 9, and 9 divided by 45 is 0.2, that is 20%. |
| 10 | 0.375 | The error is copying the digits; three divided by eight is 0.375. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Three steps: make the denominator ten or a hundred, divide to a decimal, then multiply by a hundred for a percentage; always convert to one form before comparing or ordering.Tutor Registration →
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.