How do you evaluate #99.86- 13.08- 45.17+ 0.33+ 1.26#?
2 Answers
Explanation:
To evaluate
- first make all such numbers upto same places of decimal and here we already have all numbers up to
#2dp# and hence not required. - split numbers with positive and negative sign before them separately and add them up separately. Here we have
#color(blue)(99.86+0.33+1.26=101.45)# and#color(red)(13.08+45.17=58.25# - subtract smaller number from larger one. Here, we have
#color(blue)(101.45)-color(red)(58.25)=43.20# - We have almost got the answer. Only thing left is putting beore it the sign of minus, as sum of those with sign plus was greater and hence we have
#99.86-13.08-45.17+0.33+1.26=43.20#
Note that if first number does not have a sign (minus or plus) before it, it means plus.
Explanation:
When you are adding and subtracting with decimals. always align the decimal points under each other.
Re-arrange the terms to have the positives first, followed by the negatives. The method of simplifying is the same as with integers,
Now combine the positives and the negatives