Question: Express the following percentages in decimal form (round-off in 2 decimal places).
1) 23%
2) 25%
3) 36%
4) 90%
5)14.2%
1. The problem asks to convert percentages to decimal form rounded to 2 decimal places.
2. The formula to convert a percentage to a decimal is $$\text{Decimal} = \frac{\text{Percentage}}{100}$$.
3. Important rule: Dividing by 100 moves the decimal point two places to the left.
4. Convert each percentage:
- For 23%, $$23\% = \frac{23}{100} = 0.23$$
- For 25%, $$25\% = \frac{25}{100} = 0.25$$
- For 36%, $$36\% = \frac{36}{100} = 0.36$$
- For 90%, $$90\% = \frac{90}{100} = 0.90$$
- For 14.2%, $$14.2\% = \frac{14.2}{100} = 0.142$$ rounded to 2 decimal places is $$0.14$$
5. Final answers:
1) 0.23
2) 0.25
3) 0.36
4) 0.90
5) 0.14