It is: 2/5 of 52 = 20.8
move two places to the left and put a decimal there.
Move the decimal over two places to the right and put the percent sign
To multiply two digit decimal numbers, multiply the numbers as you would without the decimals. To put the decimal in the answer, count the number of decimal places in the two numbers and put the decimal in the answer that many places to the left. For example: 5.12 x 6.35 = 32.5120. If the numbers were 51.2 x 63.5, the answer would be 3251.20.
To convert a percent to a decimal, express the percent as a decimal then move the decimal point to the left two places:3.0% = 0.03
If two decimal numbers have x and y digits after the decimal point respectively, then their product has (x + y) digits after the decimal point.
Put the . Two to the left, so .60
Three and sixty-two hundredths.
2/7 = 0.285714 ........ recurring
2/5 = 4/10 = 0.4
Fifty-one and thirty-two thousandths