IM 6.3.13 Lesson: Benchmark Percentages
What percentage of each diagram is shaded?
How much is 50% of 10 liters of milk?
How far is 50% of a 2,000-kilometer trip?
How long is 50% of a 24-hour day?
How can you find 50% of any number?
How far is 10% of a 2,000-kilometer trip?
How much is 10% of 10 liters of milk?
How long is 10% of a 24-hour day?
How can you find 10% of any number?
How long is 75% of a 24-hour day?
How far is 75% of a 2,000-kilometer trip?
How much is 75% of 10 liters of milk?
How can you find 75% of any number?
Explain how you can calculate each value mentally:
9 is 50% of what number?
9 is 25% of what number?
9 is 10% of what number?
9 is 75% of what number?
9 is 150% of what number?
Match the percentage that describes the relationship between each pair of numbers. One percentage will be left over. Be prepared to explain your reasoning.
What percentage of the world’s current population is under the age of 14?
How many people is that?
How many people are 14 or older?