how do i writ 21/100 in decimal form
0.21
To write 21/100 in decimal form, you can divide 21 by 100 using long division or a calculator. Here's how to do it using long division:
1. First, write down 21 as the dividend (the number being divided) and 100 as the divisor (the number the dividend is being divided by).
0.
2. Divide the first digit of the dividend (2) by the divisor (1), which equals 2. Write down 2 above the division line.
0.2
3. Multiply the result (2) by the divisor (100) to get 200. Write this below the dividend. Then, subtract 200 from the dividend.
21 - 200 = -179
4. Bring down the next digit of the dividend (9) next to the result (2). You now have -1799.
5. Divide the first two digits of -1799 (17) by the divisor. The result is 0 because 17 is smaller than 100. Write down 0 after the decimal point.
0.2
6. Multiply the result (0) by the divisor (100) to get 0. Write this below -1799. Then, subtract 0 from -1799.
-1799 - 0 = -1799
7. Bring down the next digit of the dividend (9) next to the result (0). You now have -17999.
8. Divide the first two digits of -17999 (179) by the divisor. The result is 1 because 179 is greater than or equal to 100. Write down 1 after the decimal point.
0.21
9. Multiply the result (1) by the divisor (100) to get 100. Write this below -17999. Then, subtract 100 from -17999.
-17999 - 100 = -18099
10. Continue this process until you either reach the desired level of precision or the remainder becomes zero.
In this case, you can see that the decimal representation of 21/100 is 0.21.