CLASS-IV WORKSHEET ANSWER KEY CH-5

 

Answer Key

Worksheet 1: Critical Thinking (CCT)

1. Ikra’s chocolate bar:

   • 1/2 = 2/4, so Ikra and her sister have the same amount.

2. Why does each piece get smaller when more people share?

   • Because the whole item is being divided into more parts. The more parts you divide something into, the smaller each part becomes.

   • Example: Sharing a pizza among 2 people vs. 8 people.

3. Rohan’s pencils:

   • 1/4 of 12 = 3 pencils each. For 3 friends, total pencils needed = 3 × 3 = 9 pencils, but there are 12 pencils. So, Rohan is wrong. Each friend would actually get 1/3 of 12 = 4 pencils.

4. Lunchbox sandwich:

   • Ate = 2/4 = 1/2 of the sandwich.

   • Left = 2/4 = 1/2 of the sandwich.

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Worksheet 2: Competency-Based

1. Pizza Topping (circle divided into 8 equal parts):

   • Cheese = 3/8

   • Tomato = 2/8

   • Plain = 3/8

2. Mangoes Distribution:

   • 2 children: Each gets 8/16 = 1/2

   • 4 children: Each gets 4/16 = 1/4

   • 8 children: Each gets 2/16 = 1/8

3. Meena’s chocolates:

   • 3/5 of 10 = (10 × 3)/5 = 6 chocolates given.

   • Left = 10 – 6 = 4 chocolates.

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Worksheet 3: Higher-Order Thinking (HOTS)

1. Which is greater (3/4 or 5/8)?

   • 3/4 = 6/8. Since 6/8 > 5/8, 3/4 is greater.

2. Create Your Own Problem (example answer):

   • "A fruit basket has 12 apples. I gave 1/3 to my friend and 1/4 to my brother. How many apples are left?"

   • (4 to friend + 3 to brother = 7 given, 12 – 7 = 5 left)

3. Rina vs. Ali shaded parts:

   • Rina: 2/4 = 1/2 of the paper.

   • Ali: 4/8 = 1/2 of the paper.

   • Yes, they shaded the same amount.