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P3 Introduction to Decimals: Paper 2 Intermediate
P3 Introduction to Decimals: Paper 2 Intermediate
This paper puts one-place decimals on a number line, orders three numbers, then works through carrying at ten tenths, money in ten-cent coins, a length difference, subtraction, doubling, and a carrying addition, and finally corrects writing 0.12 for 0.7 plus 0.5. Answers and notes are included.
Direct answers Items 01 to 03 cover the midpoint on a number line, ordering and carrying at ten tenths, 04 to 06 cover money, a length difference and subtraction, 07 to 09 cover doubling, 5.0 minus 2.6 and a carrying sum, and 10 corrects a common carrying slip.
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)
- FoundationOn a number line, which one-place decimal lies halfway between 0.3 and 0.9?
- FoundationOrder 0.9, 1.4 and 0.5 from smallest to largest. What are the smallest and largest?
- FoundationWhat is 4 tenths plus 6 tenths?
- IntermediateHow many ten-cent coins are in $1.5?
- IntermediateOne rope is 2.7 m long and another is 2.3 m. How much longer is the first?
- IntermediateWhat is 7.8 minus 3.5?
- ChallengeWhat is double of 0.8?
- ChallengeWhat is 5.0 minus 2.6?
- ChallengeWhat is 3.4 plus 2.9?
- Error redoCorrect this: 0.7 plus 0.5 equals 0.12.
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 0.6. | Halfway between 3 tenths and 9 tenths is 6 tenths, that is 0.6. |
| 2 | 0.5 and 1.4. | 0.5 is under 1 with the fewest tenths, and 1.4 has one whole, so the order is 0.5, 0.9, 1.4. |
| 3 | 1.0. | 4 plus 6 make 10 tenths, and ten tenths are 1.0. |
| 4 | 15. | One dollar is 10 ten-cent coins, plus 5 more makes 15. |
| 5 | 0.4 m. | 27 tenths minus 23 tenths leave 4 tenths, that is 0.4 m. |
| 6 | 4.3. | Line up the points: 8 tenths minus 5 tenths is 3, and 7 minus 3 is 4, giving 4.3. |
| 7 | 1.6. | Two lots of 0.8 make 16 tenths, which is 1.6. |
| 8 | 2.4. | 50 tenths minus 26 tenths leave 24 tenths, that is 2.4. |
| 9 | 6.3. | 4 tenths plus 9 tenths make 13 tenths: write 3 and carry 1, then 3 plus 2 plus 1 make 6, so the total is 6.3. |
| 10 | Wrong. 7 tenths plus 5 tenths make 12 tenths, which is 1.2, not 0.12. | Ten tenths carry into one whole and 2 tenths remain, so the answer is 1.2. |
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.
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