Answer:
Rounding off means estimating precisely
(a) 4.918 m to the nearest 0.1 m
- Rounding off to 0.1 m means to estimate it to one decimal place
- Now we have to check digit at second decimal place which is 1
- Rule: If digit is greater or equal to 5 increase one to previous digit
So the answer will be: 4.9 m
(b) 9.71 cm to the nearest cm,
- We have to round it off to nearest cm.
- As the digit after decimal is greater than 5
- 9 will be increased by 1
So the answer will be: 10 cm
(c) $10.982 to the nearest ten cents,
- We have to round it off to nearest cents
- As the digit after decimal is greater than 5
- 10 will be increased by 1
So the answer will be: $11
(d) 6.489 kg to the nearest - kg.
- We have to round it off to nearest kg
- As the digit after decimal is 4 , smaller than 5
- We will check on to the next digit, 8 is greater than 5
- previous digit (4) will be increased by 1
So the answer will be: 6.5 kg
I hope it will help you!
