Page 119 - New Medley 5 Semester 1

75286160 + 10 = 75286170.

Hence 75286166 rounded to the nearest tens is

75286170.

(c) Units digit of 621652945 is 5. Clearly rule 2 is applicable.

To round the number we replace 5 by 0 and add 10.

621652940 + 10 = 621652950

Hence 621652945 rounded to the nearest tens is
621652950.

Rounding to the Nearest Hundreds

Rule 1: If the digit in the tens place is 0 or 1 or 2 or 3 or 4 (less than 5)
then we make the tens and the units place both as zero.

Rule 2: If the digit in the tens place is 5 or 6 or 7 or 8 or 9 (more than
or equal to 5) then we make the tens place and units place both

a zeros and add 100 to the number.

Example 23: Round 8256822 to the nearest hundreds.

Solution: Digit in tens place of 8256822 is 2.

Clearly rule 1 is applicable.

To round the number we replace the units and tens place both
by zeros.

Hence 8256822 rounded to the nearest hundreds is 8256800.

Rounding to the Nearest Thousands

Rule 1: If the digit in the hundreds place is 0 or 1 or 2 or 3 or 4 (less
than 5) then we make the hundreds, tens and units place all as

zeros.

Rule 2: If the digit in the hundreds place is 5 or 6 or 7 or 8 or 9 (more

than or equal to 5) then we make the hundreds, tens and units
place as zeros and add 1000.

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