Secondary 1 - Number and Algebra
Standard 7.NA.3 - Convert between percents, fractions and decimals.
Included Skills: Fractions, Ratios, Decimals
Percentage • 3.1 expressing one quantity as a fraction or decimal • 3.2 expressing one quantity as a percentage of another • 3.3 comparing two quantities by percentage • 3.4 percentages greater than 100% • 3.5 increasing/decreasing a quantity by a given percentage (including concept of percentage point) • 3.6 finding percentage increase/decrease • 3.7 reverse percentages • 3.8 problems involving percentages • 3.9 Collect examples of percentages from newspapers and magazines and discuss the meaning of percentage in each example. • 3.10 Examine bills and receipts, ect. to find examples of the uses of percentages, e.g. discount, service charge, GST and other taxes and check the calculated values. • 3.11 Make connections between percentages and fractions/decimals, e.g. "25% of a quantity is 1/4 of the quantity". "20 % of x is 0.2x". • 3.12 Discuss misconceptions, e.g. "A is 5% more than B, then B is 5% less than A".