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Question

Estimate 1.9

Estimate 0.9458

Estimate 0.5

Estimate 0.93


Solution

ROUNDOFF THE NUMBER :
The tens digit is the digit that is second from last in a number, before the ones digit. (If you're looking at 12, look at the number 2.) Then, if that number is less than 5, keep the rounding number the same; if it is greater than or equal to 5 round the roundingnumber up one digit.


1) 1.9 
it can round up as 2.0

2)0.9458 
it can be round up as 0.946 as the last digit is  greater than 5 
similarly again it is rounded up as 0.95 and 
finally to 2.0

3)0.5 
as the last digit is 5 we can't round up or round down so the number will remian same as 0.5


4)0.93
it can be round down to 0.90 as the last digit is less than 5 

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