0.8 pounds is 12.8 ounces
8/10" is roughly .067'
24 twenty-four
2.5 is 2 and 5 tenths (or 25 tenths in total)
In much the same way as anyone writes decimals.
8.4Eight and four tenths can be expressed as 8.4. To the right of the decimal place/point, the first position is tenths, the second place is hundredths, and the third place is thousandths, fourth place is ten thousandths..etc..
Two fifths is equivalent to four tenths, 0.4, or 40%, among an infinite number of other possible equivalent fractions, decimals, and percentages.
Four
Eight tenths simplified is 4/5ths. When both are converted into percentages, 4/5ths is obviously bigger. Two thirds is not bigger than eight tenths.
2.8
Using grids divided into tenths instead of hundreds would make for much more efficient counting.
0.8 pounds is 12.8 ounces
8/10" is roughly .067'
19.68
it is 400 grams or one fourth of a kilogram
They're only used half as much Their presentation. A vulgar fraction can have a variety of bases like 1/4, 1/2, 3/8 etc., so it's not always east to compare. Decimals are always in tenths, so much more simple.
420 is much larger than 4.2 -- Four Hundred and Twenty as opposed to Four and Two-Tenths