91Ó°ÊÓ

For Exercises \(17-30\), multiply the decimals. Then estimate the answer by rounding. The first estimate is done for you. $$-0.0008 \times 6.5$$

For Exercises \(27-32,\) subtract the decimal numbers. Then round the numbers and find the difference to determine if your answer is reasonable. The first estimate is done for you. $$23.3-20.8$$

Divide. $$52 \div 9$$

For Exercises \(17-30\), multiply the decimals. Then estimate the answer by rounding. The first estimate is done for you. $$-0.0008 \times 6.5$$

For Exercises \(27-32,\) subtract the decimal numbers. Then round the numbers and find the difference to determine if your answer is reasonable. The first estimate is done for you. $$45.02-32.7$$

Multiply. a. \(5.1 \times 10\) b. \(5.1 \times 100 \quad\) c. \(5.1 \times 1000\) d. \(5.1 \times 10,000\)

For Exercises \(33-40\), convert the fraction to a decimal and round to the indicated place value. \(\frac{2}{7} ;\) thousandths

For Exercises \(35-42,\) multiply the numbers by the powers of 10 and \(0.1 .\) $$96.59 \times 1000$$

Six test scores for Jonathan's history class are listed. Find the mean and median. Round to the nearest tenth if necessary. Did the mean or median give a better overall score for Jonathan's performance? $$92 \%, 98 \%, 43 \%, 98 \%, 97 \%, 85 \%$$

Divide. $$123.4 \div 0.01$$