**1. No quiz today, exam next week.**

**2. Real numbers and use of calculators:**.

- Rational number: can be expressed as a decimal by dividing the numerator of the rational number by its denominator
- Terminating decimal: has a finite number of digits: ⅜, 5/16
- Repeating decimal: 9/11, 7/11
- Irrational number: non-terminating and non-repeating decimals
- Use of calculators

**3. Rounding numbers to decimal places**

- Mark the cut-off point after the desired place value
- Rule of rounding up: the first digit after the cut-off point, is >=5
- Rule of rounding don: the first digit after the cut-off point, is < 5
- Nearest 10, 100, 1000, one million, …
- Nearest tenth, hundredth, or thousandth, …
- 1 decimal place, two decimal places, 3 decimal places, …

**4. Home Work:**

- Handout: two pages
- Workbook:
- page 11: 24, 25, 26, 27, 28, 29
- page 12-13: 30, 31, 32, 33, 34, 35, 36