11/10/2019

Lesson 10

Midterm exam paper review

Percentages

- What is percentage?

- Special fraction #/100=#%
- percent ( for short)
- few interesting percent: 0%, 100%

2. Percent <====> Fraction form

25%= 25/100. 3%= 3/100

4/5=80/100=80%. 1/8=0.125=12.5%

3. Percent <=====> Decimal Form

20%=0.2. 77%=0.77. 4%=0.04

- Move decimal point to two places to the left

0.075=7.5%. 0.225=22.5%. 0.8=80%

- Move decimal point to two places to the right

Homework:

- Correct Midterm exam paper
- Workbook 6A P43-45 1, 2, 3. P46. 2
- Practice 4A paper