Neither. The number of digits after the decimal point is a measure of the accuracy, not magnitude.
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two third in decimal = 0.66666...2/3:= 2 ÷ 3= 0.6666... in decimal
2/3 = .66 It is a repeating decimal.
2 and 3/5 as a decimal is 2.6
How 1 half, 1/2 (fraction notation), is written in decimal notation (with 3 decimals) ? 1/2 = 0.500
A simple trick with multiplying decimal numbers is to remove the decimals, multiply the two numbers, then add the decimals back in. The number of decimals you add back in is the total number of decimal places. For example, the stated problem has 1 decimal places in 2.1 and 2 decimal places in 5.01. So first we do the following: 21x501=10521 Now we add 1+2=3 decimal places into the result above: 10.521 That's the answer.