Thursday, November 29, 2012

Powers and roots - foundation


Powers and roots - foundation
You scored 5 out of 5
1. What is 42
You said: 16

Well done! 
2. What is square root of four
You said: 2 or -2

Well done. You remembered that 4 has two square roots. 
3. What is 83
You said: 512

Well done. You remembered that 83 means 8 x 8 x 8 
4. What is cube root of 64
You said: 4

Well done! 
5. Simplify 22 x 23 
You said: 25

Well done. You remembered to add the indices. 

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