You do the multiplication in exactly the same way. The only extra thing is that when multiplying decimals, you need to place the decimal point (or decimal comma - depending on your country) in the correct position. If one number has, for example, 3 digits after the decimal point, and the other 4, you need to place the decimal point in the result (BEFORE eliminating unnecessary zeros) in such a way that there are, in this example, 7 digits (3 + 4) to the right of the decimal point.
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When multiplying whole numbers the product will be more than the numbers being multiplied. When multiplying decimals, it will be less.
Frequancy Tables only use whole numbers while relative frequency tables use exact percentages or decimals.
Repeating decimals are rational numbers if there is a pattern, like 0.22222222. If it is not a pattern, like 0.568964329, it is an irrational number.
Yes
Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
It is called the range.