0.21
21 is composite because it has more than one factor1,3, 7, and 21
Percent is "hundredths" or "one hundredths" as we use it. Your 0.021 is 21/1000 or 21 one thousandths. It is also 2.1/100 and that's 2.1 hundredths or 2.1 one hundredths, or 2.1 percent or 2.1 %. And it's already rounded off to the nearest 1/10th of a percent.
21 isn't a prime number because it has more factors than just itself and 1 3x7=21 21x1=21
21 is a composite number because it has more than two factors
4.375
3.588 - 0.21 = 3.378
0.21 is 21 hundredths written as a decimal.
4.23 is 4 plus twenty three hundredths 4.13 is 4 plus thirteen hundredths twenty three hundredths are more than thirteen hundredths (straight comparison between numerators (21 > 13) as the denominators are equal at 100), and when both added separately to 4, the larger number will be the one with the larger fraction.
.21
21/100 of 200 is 42.
21 more than 12 is 21+12, which is 33.
21
0.21
0.35
'Percents' are hundredths. 21% = 21/100
66.21