The DAV Maths Book Class 5 Solutions and DAV Class 5 Maths Chapter 7 Worksheet 8 Solutions of Multiplication and Division of Decimal Numbers offer comprehensive answers to textbook questions.
DAV Class 5 Maths Ch 7 Worksheet 8 Solutions
Question 1.
Find the quotient orally.
(a) 1.7 ÷ 10
Solution:
1.7 ÷ 10 = 0.17
Decimal point shift one place to left.
(b) 4.9 ÷ 10
Solution:
4.9 ÷ 10 = 0.49
Decimal point shift one place to left.
(c) 19.2 ÷ 1000
Solution:
19.2 ÷ 1000 = .0192
The decimal point shifts three places to the left.
(d) 57.98 ÷ 100
Solution:
57.98 ÷ 100 = 0.5798
The decimal point shifts two places to the left.
(e) 601.8 ÷ 1000
Solution:
601.8 ÷ 1000 = 0.6018
The decimal point shifts three places to the left.
(f) 44.81 ÷ 1000
Solution:
44.81 ÷ 1000 = 0.04481
The decimal point shifts three places to the left.
(g) 1.3 ÷ 100
Solution:
1.3 ÷ 100 = 0.013
The decimal point shifts two places to the left.
(h) 2.56 ÷ 1000
Solution:
2.56 ÷ 1000 = 0.00256
The decimal point shifts three places to the left.
(i) 148.5 ÷ 10
Solution:
148.5 ÷ 10 = 14.85
Decimal point shift one place to left.
(j) 708.13 ÷ 100
Solution:
708.13 ÷ 100 = 7.0813
The decimal point shifts two places to the left.
Question 2.
Fill in the boxes. The first one is done for you.
(a)
Solution:
6.5 ÷ 10 = 0.65
Decimal has shifted 1 one place to the left.
(b)
Solution:
3.7 ÷ 10 = 0.37
(Decimal has shifted one place to the left)
(c)
Solution:
15.81 ÷ 10 = 1.581
(Decimal has shifted one place to the left)
(d)
Solution:
8.19 ÷ 10 = 0.819
(Decimal has shifted one place to the left)
(e)
Solution:
77.1 ÷ 100 = 0.771
(Decimal has shifted two places to the left)
(f)
Solution:
36.2 ÷ 100 = 0.362
(Decimal has shifted two places to the left)
(g)
Solution:
710.3 ÷ 100 = 7.103
(Decimal has shifted two places to the left)
DAV Class 5 Maths Chapter 7 Worksheet 8 Notes
In order to divide a decimal number by 10, 100, 1000 we just shift the decimal point in the quotient to the left by as many places as there are zeroes in the divisor.
Examples:
(a) 76.9 ÷ 10 = 7.69
The decimal point shifts one place to the left.
(b) 349.6 ÷ 100 = 3.496
The decimal point shifts two places to the left.
(c) 756.3 ÷ 1000 = 0.7563
The decimal point shifts three places to the left.