The DAV Maths Book Class 5 Solutions and DAV Class 5 Maths Chapter 9 Worksheet 5 Solutions of Rounding Numbers offer comprehensive answers to textbook questions.
DAV Class 5 Maths Ch 9 Worksheet 5 Solutions
Question 1.
Round off the following decimal numbers to the nearest ones.
(a) 2.8
Solution:
2.8 → 3.0
(b) 4.1
Solution:
4.1 → 4.0
(c) 9.6
Solution:
9.6 → 10.0
(d) 8.4
Solution:
8.4 → 8.0
(e) 10.5
Solution:
10.5 → 11.0
(f) 40.8
Solution:
40.8 → 41.0
(g) 52.6
Solution:
52.6 → 53.0
(h) 95.8
Solution:
95.8 → 96.0
(i) 7.5
Solution:
7.5 → 8.0
(j) 99.6
Solution:
99.6 → 100.0
DAV Class 5 Maths Chapter 9 Worksheet 5 Notes
Rounding off to the nearest ones.
In order to round off decimal numbers to the nearest ones, look at the digit in the tenth place.
Example.
Round off the given decimals to the nearest ones.
1.5, 1.2, 7.7, 18.3
Solution:
1.5 → 2.0
1.2 → 1.0
7.7 → 8.0
18.3 → 18.0
- If the digit in the tenths place is 0, 1, 2, 3, or 4, round off to the nearest whole number which is smaller than the decimal number.
- If the digit in the tenths place is 5, 6, 7, 8, or 9, round off to the nearest whole number which is greater than the decimal number.