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The period that separates two parts of a decimal is called the decimal point. It distinguishes the whole number part from the fractional part of a number. For example, in the decimal 3.14, the decimal point separates the whole number 3 from the fractional part 14.
Mixed numbers have fractional parts that must be compared; whole numbers do not.
adding fractions is like adding a WHOLE lot of parts of numbers
One way they are different is that decimals are "parts of a whole" not necessarily a whole.
A decimal number is not always smaller than a whole number. This is a decimal number 2.45 The number on the left of the decimal point shows the whole numbers. The numbers on the right of the point shows the parts/fractions. This number is not a whole number .098 This number is a whole number 2.00 This number has whole numbers and parts/fractions of the whole 2.098