Only experimentally measured numbers or results calculated from them use significant digits. “Find the mass of 0.05 mole of calcium chloride.” The number 0.05 is considered to be an exact number (but the mass is not). is exact; however, the number 3.14 has only three significant figures, while 3.1416 has five.)

As reasoned with the stopwatch, this measure, 3 lbs, is subject to the precision of the scale. It is not an exact number. It could be other number close to 3: 2.99 for example.

Example : 1, 2, 3, …., 1/2, 3/2, ….,pi are considered as exact numbers. Approximate number are those that represent the numbers to certain degree off accuracy and obtained by measurement. It have uncertainty but they often appears as fractional. Example : The value of root 2 ( 1.4142 ) is approximate number.

A number that counts something is an exact number. When you say 4 mugs, 5 books, or 2 watches, you are using exact numbers. However, when you use a rule to measure the height of your friend as 155.2 cm, you obtain a measured number.

pi is very exact number. But, since it is an irrational number it cannot be expressed as a fraction of two integers, or by a finite decimal expansion or by an infinite non-repeating expansion.

Also, if you measure the diameter of a circle, and you calculate the radius by dividing the diameter by 2, the number 2 is exact. There are exactly two radii in the diameter. Also, some values are exact because one unit is defined as being exactly equal to another. Any metric relationship is exact.

Pi is an irrational number, which means that it is a real number that cannot be expressed by a simple fraction. That’s because pi is what mathematicians call an “infinite decimal” — after the decimal point, the digits go on forever and ever.

List of Perfect Squares

Example Square Roots: The 2nd root of 100, or 100 radical 2, or the square root of 100 is written as 2√100=√100=±10.

The square root of 100 is expressed as √100 in the radical form and as (100)½ or (100)0.5 in the exponent form. The square root of 100 rounded up to 8 decimal places is 10.00000000. It is the positive solution of the equation x2 = 100. Square Root of 100: 10.

13

The number 69 is a number with only two prime factors 3 and 23. The square root of a number implies a number whose product with itself gives the initial number….Square Root of 69.

The square root of 85 rounded up to 10 decimal places is 9.2195444573….Square Root of 85 in radical form: √85.

You can’t finish finding it. But you can get better and better approximations by: start with a number whose square is close to 85. (9 or 10. 92 is closer, so start there.

Thus, 17/20 is the simplified fraction for 85/100 by using the GCD or HCF method. Thus, 17/20 is the simplified fraction for 85/100 by using the prime factorization method.

85%

Steps to simplifying fractions Therefore, 85/100 simplified to lowest terms is 17/20.

What is 85/100 Simplified? – 17/20 is the simplified fraction for 85/100.