141.4
(because 7 > 4, so you round up)
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It is 4.8 when rounded to one decimal place.
To round 42.5 to 1 decimal place, you look at the digit immediately to the right of the decimal point, which is 5. Since 5 is 5 or greater, you round the digit in the 1st decimal place up by 1. Therefore, 42.5 rounded to 1 decimal place is 42.6.
you take the 2nd decimal and if it is under 5 you take out the 2nd decimal and leave the 1st decimal the way it is, if the 2nd decimal is 5 and over you add 1 to the 1st decimal with 5.72 it will change to 5.7 but if it was 5.77 it would change to 5.8
125.4 Taking a look at the number 125.3546 and wanting to round to the 1st decimal place you would take a look at the second decimal number (5) and see that it is greater than 5 so the 3 on 125.3 would round up to 4 to get the answer of 125.4
To determine which number is bigger, we compare the digits place by place. In this case, the first digit after the decimal point is the deciding factor. In 6.4, the digit after the decimal point is 4, while in 6.004, the digit after the decimal point is 0. Since 4 is greater than 0, 6.4 is bigger than 6.004.