Rounding off the nearest 10.
Step:1) Look at the digit in ones place.
2) If the digit is less than 5, digit in ones place becomes 0 and the digit in tens place remains same.
3) If the digit is equal to or more than 5, the digit in ones place becomes 0 and add 1 to the digit in tens place.
Rounding off the nearest 100.
Step:1) Look at the number formed by digit in ones and tens place.
2) If the digit is less than 50, digit in ones and tens place becomes 0 and the digit in hundred place remains same.
3) If the digit is equal to or more than 50, the digit in ones and tens place becomes 0 and add 1 to the digit in hundred place.
Rounding off the nearest 1000.
Step:1) Look at the number formed by digit in ones ,tens and hundred place.
2) If the digit is less than 500, digit in ones ,tens and hundred place becomes 0 and the digit in thousand place remains same.
3) If the digit is equal to or more than 500, digit in ones ,tens and hundred place becomes 0 and add 1 to the digit in thousand place.
Rounding off the nearest 10000.
Step:1) Look at the number formed by digit in ones ,tens, hundred and thousand place.
2) If the digit is less than 5000, digit in ones ,tens , hundred and thousand place becomes 0 and the digit in ten thousand place remains same.
3) If the digit is equal to or more than 5000, digit in ones ,tens, hundred and thousand place becomes 0 and add 1 to the digit in ten thousand place.
Exercise
1.Round-Off the numbers to the nearest 10.
a) 86521b) 56366
c) 99999
d) 1000102
e) 522456
2.Round-Off the numbers to the nearest 100.
a) 86521b) 56366
c) 99999
d) 1000102
e) 522456
3.Round-Off the numbers to the nearest 1000.
a) 86521b) 56366
c) 99999
d) 1000102
e) 522456
4.Round-Off the numbers to the nearest 10000.
a) 86521b) 56366
c) 99999
d) 1000102
e) 522456