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Q: What is decimal expansion?

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In the decimal expansion of , the digit repeats indefinitely.

The decimal expansion of an irrational number is non terminating and non recurring

It is 0. As is every digit after the decimal point.

a single unit

It is the decimal approximation to the value of the irrational number.

0.125

569.384 = 71173⁄125

0.5454 repeating

It is 300 + 10 + 1.

12 = 10 + 2

You carry out long division.

It is -35, exactly as in the question.

Treating as terminated decimal expansion (0.33333333333) = 33333333333 / 100000000000 Treating as non terminating repeating decimal expansion (0.333......) = 1/3

Its decimal "expansion" is 30, as in the question. You could express it as 30.000... except that doing so would imply a greater degree of precision.

It is 1/100.

1/9

0.75 = 3/4

It is 300 + 50 + 7.

If its a rational number then its decimal equivalent can be expressed as a fraction

Pi, and the square root of pi, belong to a category known as transcendental numbers, which means that not only do they have an infinite decimal expansion (the numbers following the decimal go on forever) but the decimal expansion follows no pattern and is unpredictable. Irrational numbers also have an infinite decimal expansion, but not necessarily an unpredictable one.

It is: 1/5 = 0.2 as a decimal

3/4 = 0.75

0.125 = 1/8

1,9,8 and 9

extended binary coded decimal interchange code