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A decimal number is a way of representing numbers so that the place value of any digit is ten times that of the digit to its right. You can have whole numbers in binary, octal, hexadecimal etc bases.

A decimal number may or may not have a fractional part. A whole number cannot have a fractional part.

Q: 2 ways in which whole numbers and decimal numbers are different?

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Whole numbers are a proper subset of decimal numbers. All whole numbers are decimal numbers but not all decimal numbers are whole numbers.

They are simply different ways of representing numbers.

5 different ways isn't it

They are all different ways of representing numbers.

The question is based on a false premise: the opposite of a decimal is not a whole. A decimal is simply a way of representing a number is such a way that the place value of each digit is ten times that of the digit to its right. Therefore 4 is a decimal, 2.75 is a decimal. There are different ways of defining opposite. The additive opposites of the two numbers are -4 and -2.75 so one of them is a whole number, the other is not. The multiplicative opposites are 0.25 and 0.3636... so neither of them are whole.

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Write 2 ways in which whole numbers and decimal numbers are different

Whole numbers are a proper subset of decimal numbers. All whole numbers are decimal numbers but not all decimal numbers are whole numbers.

They are both ways of representing parts of whole numbers.

They are simply different ways of representing numbers.

5 different ways isn't it

They are all different ways of representing numbers.

There are 8 different pairs of whole numbers whose prodcut is 40. Allowing for commutativity (a*b = b*a), there are 16 possible ways.

The question is based on a false premise: the opposite of a decimal is not a whole. A decimal is simply a way of representing a number is such a way that the place value of each digit is ten times that of the digit to its right. Therefore 4 is a decimal, 2.75 is a decimal. There are different ways of defining opposite. The additive opposites of the two numbers are -4 and -2.75 so one of them is a whole number, the other is not. The multiplicative opposites are 0.25 and 0.3636... so neither of them are whole.

If you restrict yourself to positive whole numbers, there are four.

10x5 and 1x50

Not necessarily. They are simply two different ways of writing numbers that can be big or small.

Numbers have two parts To the left of the decimal point , whole numbers To the right , fraction or part of 1 Two ways to write it: Say: 2.56 (decimal) 2 56/100 (simplifies to ) 2 14/25 Both have same value