Summative assessment: Fractions, decimals and percentages

Summative assessment: Fractions, decimals and percentages

Instructions

• Read each situation carefully.

• Write the proper working steps and the answers on a ruled sheet of paper with proper numbering.

• Upload the picture of working in your class notebook on the summative assessment page.

Situation 1

Anne is baking a cake for the first time. She decided to bake a carrot cake using the recipe given by her mother. Which mathematical concept is most relevant in this situation?(Fraction/decimal/percentage)

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Anne bought 6/7 pounds of carrots to bake the cake. She only used 2/9 pounds of the carrots. How many pounds of carrots are left over?

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The recipe called for using 5/9 cups of sugar before baking and another 2/3 cups after baking. What is the total amount of sugar needed in the recipe?

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Anne needed 1/3 cup of flour to bake a cake sufficient for 1 person. If she wanted to bake for 9 people, how many cups of flour would she need?

Situation 2

A school hosted their annual sports day, which included various races. Students of grade 3-5 participated in each race. Which mathematical concept will help decide the winner of a race based on the time taken? (fraction/decimal/percentage)

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Trisha took 3.25 minutes to complete the race and Rachel took 3.207 minutes to complete the race. Who won the race?

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Kate drank 0.65 litres of water after each race. She participated in two races. How much water did she drink in all?

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A race course is 1,347.9 meters long. Round off the length of the race coruse to the nearest whole number?

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Total time taken for the event was 32.5 minutes. There were a total of 4 races. Each race took the exact same time to complete. How much time did each race take to complete?

Situation 3

Ambika has gone out for Diwali shopping. She observes exciting offers on appliances, jewellery, etc. Which mathematical concept will you associate with this type of situation? (fraction/decimal/percentage)

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original price of the washing machine is Rs. 10990. However, it is on 15% discount for Diwali. Calculate the reduced price the buyer has to pay.