How to Add or Subtract Numbers in Standard Form (Part 4/4)

⭐️ https://www.cognito.org/ ⭐️

*** WHAT'S COVERED ***
1. How to add and subtract numbers written in standard form without using a calculator.
2. Converting numbers in standard form to have the same power of 10.
3. Ensuring the final answer is correctly written in standard form.
4. Worked examples including:
* Addition and subtraction.
* Cases where powers are initially the same.
* Cases where powers are initially different (including positive and negative powers).
* Cases where the initial result needs conversion back into standard form.

*** EXAM BOARD INFO ***
KS3 - Not on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course

*** CHAPTERS ***
0:00 Intro & Recap of Standard Form
0:40 Rules for Adding & Subtracting
1:07 Example 1: Same Powers (Addition)
1:31 Summary of Steps
2:08 Example 2: Different Powers (Subtraction)
4:01 Example 3: Different Powers (Addition)
5:35 Example 4: Negative Powers (Subtraction)

*** PLAYLISTS ***
https://youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh&si=orIUwL3o2jOoiYjT

https://youtube.com/playlist?list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g&si=DcihOwUkd9oWbbdp

https://youtube.com/playlist?list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W&si=Y8MsO-FK948jnxpS

https://youtube.com/playlist?list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7&si=-7i5Iq7yOeJrhtu6

https://youtube.com/playlist?list=PLidqqIGKox7VKJD2WxRhoKaI6JGLVean8&si=NH_Q1ujhVgACM2FU

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