79791
Description
Flashcards by Ellen Billingham, updated more than 1 year ago
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Created by Ellen Billingham
about 12 years ago
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| Question | Answer |
| What do you do when numbers with powers are multiplied together? (eg 5^2 x 5^4) | Add the powers together (so it's 5^6) |
| What do you do when numbers with powers are divided? (eg 5^5 / 5^3) | Minus the powers (so it's 5^2) |
| How do you work out powers of powers? (eg (3^2)^2) | Multiply the powers together (so it's 3^4) |
| How do you write a negative power? (eg 2^-2) | You put it in a fraction with 1 on top. (so it's 1/2^2 = 1/4) |
| How do you simplify algebra written Index Notation? | Just the same as you would with a number, but you can't work out the actual answer at the end. (add, subtract or multiply the powers when appropriate and leave it when you can't do anything else) |
| Can you do this? y^2 + y^3 | No |
| What does it actually mean when something has a positive power? (eg a power of 4) | It is the number multiplied by itself however many times the power says. (so a power of 4 is the number multiplied by itself 4 times) |
| What does it mean when something has a negative power? | It means that it is a fraction with 1 at the top and at the bottom is the number with a positive version of the negative power. (eg 2^-2 = 1/2^2) |
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