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- Yes it is! I learned a fact! Did you know that it would take 201784704 pencils to be stacked in order to reach the moon? In science notation it is 2.01784704 × 10^9.
- Mom this Planetarium Musuem is so cool!
- It is a way of writing very large or very small numbers in a short way. It is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.
- But, what is science notation?
- Is it 7 x 10^9?
- Let me ask you a question before we get back home: Population of the world is around 7 billion written out as 7,000,000,000. Can you turn this into a science notation?
- Yes! You Did it!
- Oh! An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 2^3) means: 2 x 2 x 2 = 8. 2^3 is not the same as 2 x 3 = 6.
- Mom! I dont know how to do this homework, its about exponents!
- Oh okay now I get it!
- Here's an example on power and exponent: If you say my room is fourteen foot by fourteen foot square, you're meaning your room is 14 feet × 14 feet — 14 feet multiplied by itself — which can be written as (14 ft)2. And that simplifies to 196 square feet.
- Now, You can use these skills you learnt outside in real life situations.
- Yes! These topics are so much and are very easy to understand!
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