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Decimal Multiplication and Division Paper 1: Basics
Decimal Multiplication and Division Paper 1: Basics
Start with a decimal times a whole number, decimal places and shifting by 10, then divide by a whole number.
Direct answers Answers and explanations for all ten questions
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: P5 Decimal Multiplication and Division |
| Level | P1 |
02 Questions (10 items)
- FoundationWork out 3.6 times 4.
- FoundationWork out 0.25 times 8.
- FoundationWork out 0.37 times 10 and 0.37 times 100.
- IntermediateWork out 4.8 divided by 6.
- IntermediateWork out 2.5 times 0.4.
- IntermediateWork out 9.6 divided by 0.4.
- ChallengeWork out 0.125 times 1 000.
- ChallengeWork out 7.2 divided by 100.
- ChallengeA pen costs $3.75. How much do 6 pens cost?
- Error redoA student works out 0.3 times 0.2 and answers 0.6. What is correct?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 14.4. | Do 36 times 4 to get 144, then move the point one place back for the one decimal place. |
| 2 | 2. | 25 times 8 is 200, and two decimal places move the point back two places to give 2. |
| 3 | 3.7 and 37. | Times 10 moves the point one place right to 3.7, and times 100 moves it two places to 37. |
| 4 | 0.8. | 48 divided by 6 is 8, and the one decimal place in the dividend puts one in the quotient. |
| 5 | 1. | 25 times 4 is 100, and two decimal places give 1.00, which is 1. |
| 6 | 24. | Multiply both numbers by 10 so the sum becomes 96 divided by 4, which is 24. |
| 7 | 125. | Times 1 000 moves the point three places right, so 0.125 becomes 125. |
| 8 | 0.072. | Dividing by 100 moves the point two places left, so 7.2 becomes 0.072 and the leading zero is kept. |
| 9 | $22.5. | 3.75 times 6 is 22.5, so the total is 22 dollars 50 cents. |
| 10 | 0.06. | 3 times 2 is 6, and two decimal places make it 0.06; 0.6 puts the point in the wrong place. |
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.
Count the decimal places, multiply the digits, then place the point.Tutor Registration →
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