Page 37 - Maths Skills - 7

Fractions and Decimals 35

(v) 0.213 ÷ 0.3 (vi) 77.33 ÷ 1.1 (vii) 0.196 ÷ 2.8 (viii) 8.005 ÷ 0.05

(ix) 76.363 ÷ 0.7 (x) 1.296 ÷ 0.108 (xi) 81.33 ÷ 0.03 (xii) 4.41 ÷ 0.04

5. Find out the quotients (orally)
(i) 7.165 ÷ 10 (ii) 785.16 ÷ 100 (iii) 3368 ÷ 1000 (iv) 17852 ÷ 100

(v) 28.96 ÷ 100 (vi) 7186 ÷ 1000 (vii) 7786.5 ÷ 1000 (viii) 76835 ÷ 10000

WORD PROBLEMS ON MULTIPLICATION AND DIVISION OF DECIMALS
Let’s learn through examples given below:

Let’s Attempt
12.75
Example 1: The price of 1 kg wheat flour is ` 12.75. Find the cost of 13 kg wheat flour. ×13
Solution: Cost of 1 kg flour = ` 12.75 38.25
Cost of 13 kg of flour = ` (12.75 × 13) +127.50

= ` 165.75 165.75
Example 2: The product of two decimals is 4.41. If one of them is 0.7, find the other decimal.

Solution: Product of two decimals = 4.41
Given decimal = 0.7
\ The other decimal = 4.41 ÷ 0.7 = 6.3

Exercise 2.5

1. 2.5 m cloth is required for a shirt. How many shirts can be made from a piece of cloth 17.5 m long?
2. Certain number of bottles hold 27 litres of milk. Find the number of bottles if the capacity of one bottle is
1.8 litres.

3. 75 copies of a book cost ` 2043.75. What is the cost of a single book?
4. A worker is paid an amount of ` 87.75 as daily wages. Find the total amount paid to him for 23 workdays.

5. A container can hold 5.7 litres of water. How many containers will be required to hold 74.1 litres of water?
6. A family consumes 1.750 kg wheat per day. How much wheat will the family consume in a year?
7. The product of two decimals is 42.63. If one of the decimals is 20.3, find the other.

8. Ravi bought cloth at the rate of ` 46 per metre. He paid ` 425.50 for the cloth. Find the length of the
cloth he bought.
9. The resins are sold at the rate of ` 175.75 per kilogram. Find the cost of 17 kilogram of resins.

10. Raman has 72.75 m long string. He cuts the string in certain pieces of equal length. If one piece is
14.55 m long, how many pieces are cut out from the string?

ROUNDING OFF A DECIMAL TO THE NEAREST ONES
While rounding off a decimal to the nearest ones.
● Take only the tenths digit into consideration. If the digit at tenths place is less than 5, replace the tenths digit
and all following digits by zeros (0).