Practice Proportional Reasoning in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
Thinking about multiplicative relationships between quantities that scale together.
If 3 pizzas feed 12 people, how many feed 20? Think multiplication, not addition.
Example 1
easyIf 3 notebooks cost \$7.50, how much do 7 notebooks cost?
Example 2
mediumA recipe calls for 2 cups of flour for every 3 cups of sugar. If you use 9 cups of sugar, how many cups of flour do you need?
Example 3
mediumA map uses a scale of 1 cm : 25 km. Two cities are 7.5 cm apart on the map. What is the actual distance?
Example 4
easyA recipe that serves 4 people uses 10 cups of flour. How many cups are needed to serve 10 people?