12
caluclator
2 and 7/8ths
34 = 81 , no, that would be three to the third, three to the fourth would be 81 X 3 = 243
One third of 3 3/4 is 1 1/4
yes
one fourth
Nope, one third means one out of three which is bigger than one fourth which means one out of four.
23/12
Two third is less than three fourth.
One fourth is three twelfths. So one twelfth plus three twelfths is four twelfths, which is also one third.
The value of Pi (3.1415927) to three significant figures is 3.142. If you look at the number, you're concentrating on the third & fourth digits after the decimal point. since the fourth digit is 5 or more, you round UP the third digit.
1/3 ÷ 3/4 = 4/9