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Video instructions and help with filling out and completing Fill Form 8815 Subtract

Instructions and Help about Fill Form 8815 Subtract

Hi there and welcome to another video from Hegarty maths it's mr. Haggerty here and in this video we're talking about adding and subtracting with standard form now to start with I want to actually ask you a question I've previously asked you about imagine someone asks you to evaluate 10 squared add 10 to the power of 5 can you imagine what students might do that's a mistake there well what students like to do they like to try and find a quick way of doing things so they might say mmmm 10 are 10 20 I know something about you add the powers so they might say 20 to the power of 7 now that adding the powers with indices only is true when you multiply indices isn't it and remember when I was going through those videos saying to you whatever you do don't feel obliged to do a trick or try and do something you're not sure of the only rule I ever taught you with multiplying indices was the following if you multiply them you keep the base number the same and you can add the powers I also told you if you are dividing them you keep the base number the same let's say and you can subtract the powers but I didn't say anything about if you're adding them or subtracting them I'm afraid if you're adding or subtracting them you've just got to work them out longhand ok so that wouldn't be allowed what you would do just convert that into an ordinary number what does this mean well it means 10 squared 100 and what does this mean 10 to the power of 5 is a hundred thousand so all I want you to do is add a hundred and a...

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