中文（繁體）
中文（简体）
English
Primary 5 Maths: Simple Equations — Practice Paper 3 (10 Questions)
Primary 5 Maths: Simple Equations — Practice Paper 3 (10 Questions)
Paper 3 raises the one-step numbers to two digits, uses shapes such as 4x + 9 and 6x − 15, and adds “four times a number plus 7”. Check every answer by substitution.
Quick answer 10 questions, about 25 minutes. Items 01 to 04 are one-step equations, items 05 to 07 are two-step equations, items 08 and 09 form an equation from words, item 10 targets dividing before clearing the subtraction.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 questions |
| Suggested time | 25 minutes |
| Difficulty mix | Foundation 4 · Intermediate 3 · Challenge 2 · Error redo 1 |
| Chapter | Chapter: Primary 5 Maths: Simple Equations — Tutor Lesson Plan |
| Level | Primary 5 |
02 Questions (10 items)
- FoundationSolve: x + 25 = 60
- FoundationSolve: x − 18 = 42
- FoundationSolve: 8x = 96
- FoundationSolve: x ÷ 7 = 9
- IntermediateSolve: 4x + 9 = 57
- IntermediateSolve: 6x − 15 = 45
- IntermediateSolve: 5x + 8 = 43
- ChallengeMing takes $x to buy 6 notebooks at $12 each and has $28 left. Write “let x be …”, then an equation, and find x.
- ChallengeFour times a number plus 7 equals 51. Let the number be x, form an equation and find x.
- Error redoSolve: 5x − 12 = 28 (common slip: dividing by 5 first and writing x − 12 = 5.6)
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | x = 35 | Subtract 25 from both sides: x = 60 − 25 = 35, and 35 + 25 = 60 checks it. |
| 2 | x = 60 | Add 18 to both sides: x = 42 + 18 = 60, and 60 − 18 = 42 checks it. |
| 3 | x = 12 | 8x is eight x, so divide both sides by 8: x = 96 ÷ 8 = 12, and 8 × 12 = 96 checks it. |
| 4 | x = 63 | x is divided by 7, so multiply both sides by 7: x = 9 × 7 = 63, and 63 ÷ 7 = 9 checks it. |
| 5 | x = 12 | Subtract 9 from both sides for 4x = 48, then divide by 4 for x = 12; 4 × 12 + 9 = 57. |
| 6 | x = 10 | Add 15 to both sides for 6x = 60, then divide by 6 for x = 10; 6 × 10 − 15 = 45. |
| 7 | x = 7 | Subtract 8 from both sides for 5x = 35, then divide by 5 for x = 7; 5 × 7 + 8 = 43. |
| 8 | 6 books cost $72, so x = 100 | Six notebooks cost 6 × 12 = $72, and taking that from the money he brought leaves 28: x − 72 = 28, so adding 72 gives x = 100. |
| 9 | 4x + 7 = 51, so x = 11 | “Four times plus 7” becomes 4x + 7: subtract 7 for 4x = 44, divide by 4 for x = 11; 4 × 11 + 7 = 51. |
| 10 | x = 8 | 5x − 12 is one quantity, so clear the −12 before dividing: add 12 for 5x = 40, then divide by 5 for x = 8; 5 × 8 − 12 = 28. |
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.
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.
