Page 121 - New Medley 5 Semester 1

Example 27: Round (a) 35621871 to the nearest ten lakhs.
(b) 125621900 to the nearest crore. (c) 426521453 to

the nearest ten crore

Solution: (a) Digit in lakhs place of 35621871 is 6. Clearly rule 2 is

applicable. To round the number we replace the digit
in lakhs, ten thousands, thousands, hundreds, tens

and units places by zeros and add 1000000.

Hence 35621871 rounded to the nearest ten-lakhs is
36000000.

(b) Digit in ten lakhs place of 125621900 is 5. Clearly rule
2 is applicable. To round the number we replace the

digit in ten lakhs, lakhs, ten thousands, thousands,
hundreds, tens and units places by zeros and add

1000000

Hence 125621900 rounded to the nearest crore is
130000000.

(c) Digit in crores place of 426521453 is 2. Clearly rule

1 is applicable. To round the number we replace
the digit in crores, ten lakhs, lakhs, ten thousands,
thousands, hundreds, tens and units places by zeros.

Hence 426521453 rounded to the nearest ten crore is
400000000.

EXERCISE 1.5

A. Round the following numbers to the nearest tens.
1. 7335152 2. 34454515 3. 1234567346

B. Round the following numbers to the nearest hundreds.

1. 2144467 2. 75152442 3. 872345651

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