Math Games

Grade 7 - Number Sense and Numeration

Standard 7.NSN.3 - Practice calculating the percentage in a word problem.

Included Skills:

Proportional Relationships
• determine, through investigation, the relationships among fractions, decimals, percents, and ratios;
• solve problems that involve determining whole number percents, using a variety of tools (e.g., base ten materials, paper and pencil, calculators) (Sample problem: If there are 5 blue marbles in a bag of 20 marbles, what percent of the marbles are not blue?);
• demonstrate an understanding of rate as a comparison, or ratio, of two measurements with different units (e.g., speed is a rate that compares distance to time and that can be expressed as kilometres per hour);
• solve problems involving the calculation of unit rates (Sample problem: You go shopping and notice that 25 kg of Ryan's Famous Potatoes cost $12.95, and 10 kg of Gillian's Potatoes cost $5.78. Which is the better deal? Justify your answer.).