How to Add or Subtract Numbers in Standard Form (Part 4/4) #26

This video covers how to add and subtract numbers when they're in standard from like 4x10^2 + 5x10^3. This is part 4 in our 4 part series on standard form.
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[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

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[@astryisms]

3:32 but isn’t the 0.42 x 10^6 not in standard form, since the 0.42 is less than 1?

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Yes, u r right, we r temporarily making it non standard while working out the answer. The most important thing is that the final answer is in SF

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[@vloggeroli5458]

Hi this was great, made life so much easier, but do you have any videos dealing with subtracting negative numbers in standard form i.e (-4.5 x 10) - (7.3 x 10) [10 with neg powers]

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They solved it

[@kiyxci]

What about if the difference of the powers is like 5 and 8 how do i do it

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thanks but in 3:51, 5.6 + 0.42 is = 6.02 not 5.18

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[@deepaligaikwad5726]

{ 0.42 x 10⁶ } this isn't a standard form. Is this correct?

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0.42 is not in standard front number has to be between 1-10

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