Grade Eight
Strand: Ratio and Proportion

Learning Objectives    Open this page in its own window

R-1

solve word problems involving rates and ratios

R-2
use the concept of ratio to compare

  1. three quantities of the same unit

R-3
use the concept of rate to compare different quantities

R-4 construct ratios and rates from real-life examples

R-5
express ratios and rates using
  1. fraction form

R-6
use real-world examples to find equivalent ratios and rates
  1. by using tables and charts
  2. by multiplying or dividing each term by the same whole number
R-7
rename a ratio or rate in lowest terms

R-8
compare ratios and rates

R-9
read and interpret scale drawings

R-10
construct scale drawings

R-13
express ratios as percents and decimals
  1. with any denominator

R-15
rewrite as a decimal number, and vice versa,
  1. percents greater than 100
  2. percents less than 1

R-16
convert a percent to a fraction, and vice versa,

R-17
convert a percent to a mixed number, and vice versa,

R-18
solve percent problems by writing the corresponding number sentence or proportion

R-19
determine whether a given pair of ratios forms a proportion

R-20
find the missing element in a proportion using
  1. equivalence
  2. the product of means and extremes

R-21
solve real-life percent problems about
  1. tips, GST, PST, discount, and sales price
  2. commission, simple interest
  3. percent increase and decrease