Exercise 5.5 (estimation of the total cost)

Exercise 5.5

1. Meera went to vegetable shop. He bought brinjal for ₹ 29.75, drumstick for ₹ 14.60, raddish for ₹ 34.50 and carrot for ₹ 42.80. Find the total amount and estimate to the nearest one rupee?

2. Vasu bought car toy for ₹ 37, Bear toy for ₹ 24, monkey toy for ₹ 86. Find the estimated cost and find the difference in estimation close to nearest 10 rupees.

Answer: Difference in estimation = 150 − 147 = ₹3

Difference in estimation close to nearest 10 rupees = 0

3. In the book shop Manibalan bought Bharathiyar book for ₹ 26.40, Gandhi book for ₹ 18.60, Abdul kalam book for ₹ 43.70 and Kumaran book for ₹ 51.90. Find the estimated cost and difference in estimation closes to nearest one rupee.

Estimated cost = ₹142

Difference in estimation = ₹142 − ₹140.60 = ₹1.40

Difference in estimation closes to nearest one rupee = ₹2

4. Geetha bought Jasmine for ₹ 37, Rose for ₹ 58, Mullai for ₹ 26 and Marigold for ₹ 82. Find the estimated cost and difference in estimation, close to the nearest ten rupees.

Estimated cost = ₹210

Difference in estimation = ₹210 − ₹203 = ₹7

Estimation close to the nearest ten rupees = ₹10