Basic 5Mathematics20 min

Percent Quantity Benchmarks

A shop estimates discounts by using benchmark percentages before calculating exact values.

Estimate the sale discount.

A school supply shop gives discounts. Learners use 50%, 20%, and 10% benchmarks to estimate and calculate the final discount.

Percent Quantity Benchmarks illustration

A shop estimates discounts by using benchmark percentages before calculating exact values.

Find 60% of 45.

  1. 20% is one fifth, and one fifth of 45 is 9.
  2. 60% is three groups of 20%, so 3 x 9 = 27.