The DAV Maths Book Class 5 Solutions and **DAV Class 5 Maths Chapter 7 Worksheet 5** Solutions of Multiplication and Division of Decimal Numbers offer comprehensive answers to textbook questions.

## DAV Class 5 Maths Ch 7 Worksheet 5 Solutions

Question 1.

Solve the following word problems.

(a) Renu needs five pieces of ribbon of length 7.5 cm. What is the total length of ribbon needed?

Solution:

Length of one piece of Ribbon = 7.5 cm

Length of five pieces of Ribbon = 7.5 × 5 cm = 37.5 cm

The total length of ribbon needed is 37.5 m

(b) One Mathematics book of class V costs ₹ 75.50. What is the cost of 15 such books?

Solution:

Cost of 1 mathematics book of Class V = ₹ 75.50

Cost of 15 such books = ₹ 75.50 × 15 = ₹ 1132.5

The cost of 15 such books is ₹ 1132.50

(c) It needs 2.75 metres of cloth to stitch one shirt. What is the total length of cloth needed to stitch six such shirts?

Solution:

Length of cloth required in one shirt = 2.75 m

Length of cloth required in six shirts = 2.75 × 6 = 16.50 m

The total length of cloth needed to stitch six shirts is 16.50 m.

(d) The weight of one chair is 3.75 kg. Find the weight of three dozen chairs.

Solution:

1 dozen chairs = 12 chairs

3 dozen chairs = 12 × 3 = 36 chairs

Weight of 1 chair = 3.75 kg

Weight of 36 chairs = 3.75 × 36 kg = 135 kg

The weight of three dozen chairs is 135 kg.

(e) The cost of one kilogram of mangoes is ₹ 65. Find the cost of 2.5 kg mangoes.

Solution:

Cost of 1 kg of mango = ₹ 65

Cost of 2.5 kg of mangoes = ₹ 65 × 2.5 = ₹ 162.50

The cost of 2.5 kg of mangoes is ₹ 162.50

(f) A bag weighs 85.7 kg. wheat. How much wheat will be there in 1,000 such bags?

Solution:

Weight of 1 bag of wheat = 85.7 kg.

Weight of 1,000 bags of wheat = 85.7 × 1,000 kg = 85700 kg

85,700 kg of wheat will be there in 1,000 such bags.

Word Problem

Example.

One box of grapes weighs 28.35 kg. Find the weight of seven such boxes of grapes.

Solution:

Weight of one box of grapes = 28.35 kg.

Weight of 7 box of grapes = 28.35 × 7 = 198.45

Seven boxes of grapes weigh 198.45 kg.