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R3 Percent Short Cuts
Con il contributo di: Cason
__1. 1% equals 0.01 soA. move the decimal 2 places left
__2. 2% is twice as much as 1% soB. move the decimal one place left to find 10% and double
__3. 5% is 1/2 of 10% soC. move the decimal one place left
__4. 10% equals 0.1D. so divide by the reciprocal 3
__5. 20% = 0.2 = 1/5E. is equal to dividing by four
__6. 25% = 1/4; multiplying by 1/4F. by dividing by 4 and then multiply by 3
__7. 33 1/3% = 1/3G. find 1/3 by dividing by 3 and double
__8. 50% = 1/2; to find 1/2H. move the decimal one place left and divide by 2
__9. 66 2/3% = 2/3 soI. divide by the reciprocal of 1/2 which is 2
__10. 75% = 3/4 so find 1/4 firstJ. move the decimal 2 places left and double
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