 Ratio and Percentage

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Ratio and Percentage has 6 subtopics: 1. Ratio and Proportion: this topic teach you how to find the ratio between two numbers, and what proportion means. 2. Unit Rate: this help you answer the question “How much/ how many per …” or “... for one/ a(n) ...” . For example: 50 kilometer per hour, \$2 per pound, or \$1.99 for a box of 20 pens. 3. Solving proportion by cross multiplying: shows you how to find two equivalent ratios. Example: 2 out 5 is the same as what number out of 20, or 2 tickets cost \$3 how much does 7 tickets 4. Percent: here we learn how to find the percent of number. For example: what is 4% of 45 or 3 is what percent of 5. 5. Increase and decrease percentage: this section will show you find the price of something after increase or decrease. Example: An owner sell his house at \$180,000 after decrease 10%. Find the original price. 6. Convert between Percent, Decimal, Fraction: we will learn how to convert between th
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