中文（繁體）
中文（简体）
English
P3 Introduction to Decimals: Paper 1 Basics
P3 Introduction to Decimals: Paper 1 Basics
This paper starts from one tenth: 0.1 is a single tenth, then you read the digits of numbers like 3.5, compare 0.8 with 0.6, add and subtract one-place decimals, add money in dollars and cents, and correct the common slip that 0.9 is bigger than 1.
Direct answers Items 01 to 03 cover one tenth, seven tenths and the tenths digit, 04 to 06 compare sizes and add without carrying, 07 to 09 cover subtraction, money and carrying at ten tenths, and 10 corrects a size misconception.
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: P3 Introduction to Decimals |
| Level | P3 |
02 Questions (10 items)
- FoundationWhat is one tenth written as a decimal?
- FoundationWhat do seven lots of 0.1 make?
- FoundationIn the number 3.5, which digit is in the tenths place?
- IntermediateWhich is larger, 0.8 or 0.6?
- IntermediateWhat is 0.4 plus 0.3?
- IntermediateWhat is 1.2 plus 0.5?
- ChallengeWhat is 2.6 minus 0.9?
- ChallengeA pencil costs $3.5 and a notebook costs $2.4. What is the total?
- ChallengeWhat do you get when you add 0.1 to 0.9?
- Error redoCorrect this: 0.9 is greater than 1.
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 0.1. | Split 1 into 10 equal parts; one part is 0.1. |
| 2 | 0.7. | Each 0.1 adds one tenth, so seven of them make 0.7. |
| 3 | 5. | 3.5 is 3 ones and 5 tenths, so the tenths digit is 5. |
| 4 | 0.8. | Both have 0 ones, so compare tenths: 8 is more than 6. |
| 5 | 0.7. | 4 tenths plus 3 tenths make 7 tenths, which is 0.7. |
| 6 | 1.7. | The ones digit stays 1 and 2 tenths plus 5 tenths give 7, so the total is 1.7. |
| 7 | 1.7. | 26 tenths take away 9 tenths leave 17 tenths, which is 1.7. |
| 8 | $5.9. | 35 cents plus 24 cents make 59 cents, that is $5.9. |
| 9 | 1.0. | 9 tenths plus 1 tenth make 10 tenths, and ten tenths are 1.0. |
| 10 | Wrong. 0.9 is less than 1 because it has only 9 tenths and needs one more to reach 10. | On a number line 0.9 sits to the left of 1, so 1 is larger. |
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.
Book a Maths tutorTutor 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.