On a white square paper let's draw 10 × 10 small square. By using different colours let's find the value of 0 . 5 × 0 . 9 .

Let us take a square white paper. On the paper 10 × 10 squares are drawn. Among them colour 9 rows horizontally entirely with green colour. Colour 5 columns vertically with yellow colour. Its image given below. By observing the graph, we can see that In a single row 5 boxes out of 10 boxes coloured with both colours. So it represents 0 . 5 . In a single column 9 boxes out of 10 boxes coloured with both colours. So it represents 0 . 9 . By observing all the square boxes, 45 boxes out of 100 boxes coloured with both the colours. So, it represents 45 100 part that equals to 0 . 45 . Hence, the required answer is 0 . 45 .

Let's make a story and then work out 22 . 50 × 3 . 50

Given, 22 . 50 × 3 . 50 To make a story, My mother asked me to buy 3 . 5 kg of pulses. The cost of 1 kg of pulses is ₹ 22 . 50 . Let me calculate how much money I must carry to the shop. To multiply decimals, first multiply only numbers without decimals. Next, count the number of digits after the decimal in each factor. Finally, put the same number of digits behind the decimal in the product. Cost of 3 . 50 kg of pulses, 2 2 5 × 3 5 1 1 2 5 6 7 5 + 7 8 7 5 Therefore, 22 . 50 × 3 . 50 = 78 . 75 Therefore, I must carry ₹ 78 . 75 to the shop.

Let's make a story and then work out 13 . 75 × 2 + 12 . 5 × 3

Given, 13 . 75 × 2 + 12 . 5 × 3 To make a story, If the cost of 1 single ruled notebook is ₹ 13 . 75 and that of 1 unruled notebook is ₹ 12 . 50 , then let's find the cost of 2 single ruled notebook and 3 unruled notebook. Cost of 2 single ruled notebook 1 3 7 5 × 2 2 7 5 0 Cost of 3 unruled notebook 1 2 5 0 × 3 3 7 5 0 Therefore, 13 . 75 × 2 + 12 . 5 × 3 = 27 . 50 + 37 . 50 Now adding, 27 . 50 + 37 . 50 65 . 00 Thus, 13 . 75 × 2 + 12 . 5 × 3 = 27 . 50 + 37 . 50 = 65 . 00 . Therefore, the cost of 2 single ruled notebook and 3 unruled notebook is ₹ 65 .

E M B I B E

GANITPRABHA (MATHEMATICS TEXT BOOK) CLASS 6>Chapter 7 - Multiplication and Division of Decimal Fraction by Whole Number and Decimal Fraction>Lets work out- 7

West Bengal Board Solutions for Chapter: Multiplication and Division of Decimal Fraction by Whole Number and Decimal Fraction, Exercise 6: Lets work out- 7

Author:West Bengal Board

West Bengal Board Mathematics Solutions for Exercise - West Bengal Board Solutions for Chapter: Multiplication and Division of Decimal Fraction by Whole Number and Decimal Fraction, Exercise 6: Lets work out- 7

Attempt the practice questions on Chapter 7: Multiplication and Division of Decimal Fraction by Whole Number and Decimal Fraction, Exercise 6: Lets work out- 7 with hints and solutions to strengthen your understanding. GANITPRABHA (MATHEMATICS TEXT BOOK) CLASS 6 solutions are prepared by Experienced Embibe Experts.