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Paper 1 is the non-calculator paper. It carries the same weight (80 marks) as each calculator paper, so strong non-calculator skills are essential. This lesson covers mental and written techniques that will help you work efficiently and accurately without a calculator.
You should know instantly:
| Fraction | Decimal | Percentage |
|---|---|---|
| 1/2 | 0.5 | 50% |
| 1/4 | 0.25 | 25% |
| 3/4 | 0.75 | 75% |
| 1/5 | 0.2 | 20% |
| 1/3 | 0.333... | 33.3...% |
| 2/3 | 0.666... | 66.6...% |
| 1/8 | 0.125 | 12.5% |
| 1/10 | 0.1 | 10% |
| 1/100 | 0.01 | 1% |
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