Study Guide to Placement test!

Slide 1

1-1 Rational Numbers as Decimals

• Statistics are often rounded. In the photo the decimal 0.55555... or 0.5 repeted ( sluggers)
• How to write a repeating decimal as a fraction
• 1. x = 0.5...
• Because 0.5... has 1 repeating digit in the tenth place multiply each side by 10
• 2. 10 * x = 10 * 0.5...
• 3. 10x = 5.5...
• 4. 10x - x = 5.5... - 0.5...
• 5. 9x = 5
• 6. 9x/9 = 5/9
• x = 5/9
• 
• Legenda: * means multiplication and 0.5... means 0.5 repeated