Understanding Percentages and Ratios

Mrs. Chambers teaches a lesson on percentages, focusing on calculating percentages of quantities. The lesson includes a challenge involving dominoes and different representations of fractions, decimals, and percentages. Students learn to use ratio tables to understand proportional relationships and solve practice problems. The lesson concludes with additional challenges for further practice.

What was the challenge given by Mr. Canal?

• To solve a complex math problem

• To create dominoes using fractions, decimals, percentages, or images

• To write an essay on percentages

• To create dominoes using only fractions

Which representation was used to match one quarter in the solution?

• 0.25

• 0.1

• 0.5

• 0.75

How far has Zara cycled if she completed 50% of her 420 km bike ride?

• 420 km

• 315 km

• 210 km

• 105 km

What is the equivalent of 10% in decimal form?

• 0.1

• 0.01

• 0.5

• 1.0

How many kilometers has James cycled if he completed 1% of the 420 km race?

• 4.2 km

• 42 km

• 0.42 km

• 42.2 km

What is the purpose of using a vertical ratio table?

• To see proportional relationships between percentages and amounts

• To make calculations faster

• To simplify fractions

• To avoid using decimals

What is 50% of 650 using the ratio table method?

• 325

• 650

• 65

• 1300

If 5.4 is 10% of a number, what is the number?

• 54

• 0.54

• 5.4

• 540

What percentage of 1400 is equal to 14?

• 10%

• 100%

• 0.1%

• 1%

How much money has been raised if 10% of the £200 target is achieved?

• £2

• £100

• £200

• £20