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Fraction to Decimal Conversion Table
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Fraction to Decimal Conversion Table

  Number Prefix Symbol
10 1 deka- da
10 2 hecto- h
10 3 kilo- k

10 6

mega- M
10 9 giga- G
10 12 tera- T
10 15 peta- P

10 18

exa- E
10 21 zeta- Z
10 24 yotta- Y

10 -1

deci- d

10 -2

centi- c

10 -3

milli- m

10 -6

micro-
10 -9 nano- n

10 -12

pico- p

10 -15

femto- f

10 -18

atto- a
10 -21 zepto- z

10 -24

yocto- y

Hierarchy of Decimal Numbers

To divide decimal numbers:

  1. If the divisor is not a whole number:

  • Move the decimal point in the divisor all the way to the right (to make it a whole number).

  • Move the decimal point in the dividend the same number of places.

  1. Divide as usual. If the divisor doesn't go into the dividend evenly, add zeroes to the right of the last digit in the dividend and keep dividing until it comes out evenly or a repeating pattern shows up.

  2. Position the decimal point in the result directly above the decimal point in the dividend. [Show Me. Show and highlight the decimal point in the quotient, among the 4 and 9]

  3. Check your answer: Use the calculator and multiply the quotient by the divisor. Does it equal the dividend?

Let's work through an example.

Find this quotient:

First show the divisions like this:

Now move the decimal point one place to the right, which makes the divisor a whole number. Also move the decimal point in the dividend one place to the right:

Divide as whole numbers. 65 goes into 169 two times with 39 left over:

To continue dividing, add a zero to the right of the decimal point in the dividend. Then bring down the zero, and add it to the end of 39, making it 390

65 goes into 390 six times. We write a 6 above the zero in the quotient and put the decimal point just above the decimal point in the dividend:

To check our answer, we multiply the quotient by the divisor and make sure it equals the dividend:

 

 

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