1. The first problem asks to convert the fraction $\frac{1}{100}$ to a decimal. 2. To convert a fraction to a decimal, divide the numerator by the denominator. 3. Calculate $\frac{1}{100} = 0.01$. 4. The decimal equivalent of $\frac{1}{100}$ is $0.01$. 5. The second problem asks to round the number 2.64 to 2 significant figures (s.f). 6. Significant figures count all digits starting from the first non-zero digit. 7. The number 2.64 has three significant figures: 2, 6, and 4. 8. To round to 2 significant figures, look at the third digit (4). 9. Since 4 is less than 5, we round down, keeping the first two digits as they are. 10. Therefore, 2.64 rounded to 2 significant figures is 2.6. Final answers: - $\frac{1}{100} = 0.01$ - 2.64 rounded to 2 significant figures is $2.6$.