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 more than 12 is 21+12, which is 33.
21/100 of 200 is 42.
21
0.21
'Percents' are hundredths. 21% = 21/100
0.35
66.21