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Name ____________________________________ Date ___________________ Block ______________ Comparing Real Numbers Extra Practice 1. What is scientific notation and what is it used for? 2. Complete the table below: Standard Form Scientific Notation 5.6 x 102 .00534 5.19 x 10-4 3,020,000 .54 394,000 3. Helen told her friend that 10−4 = 10 × −4. Do you agree with her? If so, explain why? If not, what should Helen have said? 4. Consider 10-3. Use the given numbers to find an equivalent fraction and decimal. Fraction − − − Decimal .001 .003 -30.0 .0001 Name ____________________________________ Date ___________________ Block ______________ 5. Fill in the Table Below. Fractions should be written in simplest form. Decimals do not need to be expressed past the 1,000ths place. Fraction 1 3 Decimal Percent .8 3 7 37.5% .07 23 25 6. Write the fractions in the table above in descending order. _________ _________ _________ _________ _________ _________ 7. Write the following numbers in ascending order: 2.1 x 10-2 _________ 2 0.34% _________ 9 _________ 2% _________ 8. Which number is the greatest? A) 4.5 x 10-8 B) 4.5 x 103 5 C) 48 4 9. Which number is greater than 9? A) 44% B) 3 5 C) . 09 D) 9.4 x 10-3 D) 45%