

Many other quantities, such as the size of planets, the size of microorganisms, the size of microchips, and the country’s population are all expressed in standard form.Ī fraction is said to be in standard form when both the numerator and denominator are co-prime numbers.įactoid: Two numbers are said to be co-prime when their only common divisor(or factor) is 1. The weight of an electron is 9.11 × 10–31 kg. Atoms are tiny units of matter composed of three fundamental particles-proton, neutron, and electron.Ī proton and a neutron weigh equally, 1.67 × 10–27 kg.This distance can easily be written in standard form as: The distance between the Sun and Mars is 141,700,000 miles or 228,000,000 km.If you observe carefully, 1.23 is a decimal number between 1.0 and 10.0 and so we have the standard form of 123,000,000 as 1.23 × 10 8. You can define the standard form of a whole number as follows.Īny number that we can write as a decimal number, between 1.0 and 10.0, multiplied by a power of 10, is said to be in standard form.įor example, take the number 123,000,000 an easier way of writing this number is Let’s look at the standard form of some common mathematical elements: We can think of the standard form as the most common way of representing a mathematical element. This particular way is called the standard form.Īll of the things you see in math, like numbers or fractions or equations or expressions, have a standard form defined for them.

Do you see how reading numbers a certain way makes them easier to understand? That’s why all the mathematicians in the world decided to agree on some rules on writing mathematical concepts so that it is convenient for everyone to read, write, and work with. Frequently Asked Questions of Standard Formĭid you know that Earth is 4,543,000,000 years old? We know you skipped past all those zeroes, so we will give you a simpler way of saying it: Earth is 4.543 billion years old.
