How do i write the number 45 as a fraction

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45/1

Posted on Apr 01, 2014

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There are an infinite number of ways. 45/1, 90/2, 135/3, 450/10, 495/11, 4500/100, just to give a few.

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

- Make sure you're working with two fractions.
- Multiply numerator x numerator, then multiply denominator x denominator.

- Make sure you're working with two fractions
- Flip the second fraction upside down.
- Change the division sign into a multiplication sign.
- Multiply top x top and bottom x bottom.

- Convert mixed numbers into improper fractions.
- Take the whole (non-fraction) number and multiply it by the denominator.
- Add that answer to the numerator.
- Put that amount over the original denominator and you will have an improper fraction.

- Find the lowest common denominator (bottom number). For both adding and subtracting fractions, you'll start with the same process.
- Multiply fractions to match the lowest common denominator.
- Add or subtract the two numerators (top number) but NOT the denominators.

Mar 07, 2017 | Homework

0.2666666.....

Feb 27, 2014 | Office Equipment & Supplies

45 and 112 are relatively prime so no, it can't be simplified further.

Oct 17, 2013 | Texas Instruments TI-85 Calculator

A number with a periodic decimal representation cannot be equivalent to a fraction with denominator 10 (or a multiple of 10) except if the repeating decimals are zeros.

0.454545...=45/99=5/11

0.454545...=45/99=5/11

Sep 04, 2013 | Super Tutor Pre Algebra (ESDPALG)

A percentage is a proportion out of 100. So, 45% is really 45/100.

The problem then is to convert what you have into this form. If you are starting with a decimal, just multiply by 100 eg

0.135 becomes 0.135 x 100 = 13.5%

If starting with a fraction, you do the same, but by then you need a calculator eg

23/41 becomes 23/41 x 100 = 9.43%

You can see with this method, that 1 = 100%, so any number greater than 1 is a percentage greater than 100% eg

2.43 = 243%

The problem then is to convert what you have into this form. If you are starting with a decimal, just multiply by 100 eg

0.135 becomes 0.135 x 100 = 13.5%

If starting with a fraction, you do the same, but by then you need a calculator eg

23/41 becomes 23/41 x 100 = 9.43%

You can see with this method, that 1 = 100%, so any number greater than 1 is a percentage greater than 100% eg

2.43 = 243%

Apr 13, 2012 | Watches

There are an infinite number of them, including 9/10, 27/30, 36/40, 45/50,...

Jan 27, 2012 | Android Apps

As a fraction, 45/90. In lowest terms, 1/2. As a percentage, 50 or 50%.

Feb 09, 2011 | Office Equipment & Supplies

Not all decimal representations have equivalent fractions. Take pi. Its approximate value as given by the Casio FX9750II is 3.141592654. This is just an approximation because the string of decimal digits in pi has no end. It continues . Such a number that cannot be represented by a ratio of two integers is not rational, not a fraction. It is called irrational.Other such numbers are ?2, ?3,?5, e the base of natural logarithms.

As a matter of principle, if a number is called irrational, it is because it is not rational (not a fraction), and it makes no sense to try to cast it into fraction form.

However, if you truncate an irrational number so as to keep only a finite number of decimal digits, then that truncated number can be represented by a fraction, but qualitatively speaking, it is not the original irrational number.

Thus if you decide to use 3.141500000000000000....0 as an approximate value of pi then you write

3.1415=31415/10000 and the calculator will convert it to the mixed fraction 3u283u2000. To effect this conversion, you press the [FD] key to the right of [a b/c]. If you want an improper fraction 6283u2000 you press [SHIFT][[FD].

As to the value of sin 45 you quote, you should be aware that it is valid for an angle unit in radians.

It is an approximation because the radian unit is based on the value of pi, which, as I said above, is an irrational number.

If you use the degree angle unit, sin45 deg is actually equal to 1/?2 or ?2/2 and this is clearly irrational, and it cannot be represented as a fraction. In conclusion it makes no sense to try to cast it into such form.

On the other hand, sin 30 deg or cos 60 deg are both exactly equal to 1/2. The calculator will convert them to a fraction.

On a more general note, the calculator will always be able to convert a fraction into an approximate decimal number, but the converse may not be possible. It depends on the number of display space available on the screen.

As a matter of principle, if a number is called irrational, it is because it is not rational (not a fraction), and it makes no sense to try to cast it into fraction form.

However, if you truncate an irrational number so as to keep only a finite number of decimal digits, then that truncated number can be represented by a fraction, but qualitatively speaking, it is not the original irrational number.

Thus if you decide to use 3.141500000000000000....0 as an approximate value of pi then you write

3.1415=31415/10000 and the calculator will convert it to the mixed fraction 3u283u2000. To effect this conversion, you press the [FD] key to the right of [a b/c]. If you want an improper fraction 6283u2000 you press [SHIFT][[FD].

As to the value of sin 45 you quote, you should be aware that it is valid for an angle unit in radians.

It is an approximation because the radian unit is based on the value of pi, which, as I said above, is an irrational number.

If you use the degree angle unit, sin45 deg is actually equal to 1/?2 or ?2/2 and this is clearly irrational, and it cannot be represented as a fraction. In conclusion it makes no sense to try to cast it into such form.

On the other hand, sin 30 deg or cos 60 deg are both exactly equal to 1/2. The calculator will convert them to a fraction.

On a more general note, the calculator will always be able to convert a fraction into an approximate decimal number, but the converse may not be possible. It depends on the number of display space available on the screen.

Feb 02, 2011 | Casio FX9750GII Graphic Calculator

Hello,

Look at the column of keys under the ALPHA key. You have the integral, the square root, and then the key that has a degree sign, an apostrophe and a double closing quotation mark. That is the one you use to enter the angle in sexagesimal notation. To simplify my task I will symbolize the key with [DMS], degree, minute , second.

To calculate cos (32° 45')

you press

[COS] 32[DMS]45 [DMS] ) and press [=] The result si 0.841039013

Hope it helps.

Look at the column of keys under the ALPHA key. You have the integral, the square root, and then the key that has a degree sign, an apostrophe and a double closing quotation mark. That is the one you use to enter the angle in sexagesimal notation. To simplify my task I will symbolize the key with [DMS], degree, minute , second.

To calculate cos (32° 45')

you press

[COS] 32[DMS]45 [DMS] ) and press [=] The result si 0.841039013

Hope it helps.

Nov 08, 2009 | Casio FX-115ES Scientific Calculator

Hello,

Ther e is no dedicated key to do that but ther is a command ToFrac noted as ->Frac. To access it use [MATH[1:->Frac].

Two ways of using the command.

1. You want to reduce a fraction to its simplest expression

27/48 [MATH][1:->Frac] [ENTER] gives the reduced fraction 9/16

2 You do not want your results converted to decimal numbers

(27/48) [x] (5/7) [MATH][1:->Frac][ENTER] multiplies the two fractions and gives a fraction as a result. 45/112

3. Your result is in decimal form and you want to cast it into a fraction. The conversion will be exact only for certain numbers. Results kept in fraction forms are more accurate than those represented as decimals.

Hope it answers your question.

Ther e is no dedicated key to do that but ther is a command ToFrac noted as ->Frac. To access it use [MATH[1:->Frac].

Two ways of using the command.

1. You want to reduce a fraction to its simplest expression

27/48 [MATH][1:->Frac] [ENTER] gives the reduced fraction 9/16

2 You do not want your results converted to decimal numbers

(27/48) [x] (5/7) [MATH][1:->Frac][ENTER] multiplies the two fractions and gives a fraction as a result. 45/112

3. Your result is in decimal form and you want to cast it into a fraction. The conversion will be exact only for certain numbers. Results kept in fraction forms are more accurate than those represented as decimals.

Hope it answers your question.

Oct 10, 2009 | Texas Instruments TI-83 Plus Calculator

Nov 20, 2017 | The Office Equipment & Supplies

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