To express .20 as a whole number, you would multiply it by 100 to shift the decimal two places to the right. This would give you 20 as a whole number. Converting a decimal to a whole number involves removing the decimal point by multiplying the decimal by the appropriate power of 10.
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0.20 is a fraction of a number and so cannot be represented as a whole number.
To make 1.2 a whole number, it needs to be multiplied by 5, as 1.2 multiplied by 5 equals 6, which is a whole number. This is because 1.2 is equivalent to 12/10 or 6/5 when simplified. Multiplying 1.2 by 5 cancels out the denominator of 5, resulting in a whole number.
If rounded, 19.5 would become 20.
20 divided by 3 equals 6 with a remainder of 2. In terms of whole numbers, this can be written as 6 and 2/3. To convert this mixed number to a whole number, you would multiply the whole number (6) by the denominator (3) and then add the numerator (2) to get 20. So, 20 over 3 as a whole number is 20.
You would round it UP - to 20.
20