Determine the following estimate without using a calculator. Then use a calculator to perform the computation necessary to obtaln an exact answer. How reasonable is your estimate when compared to the actual answer? Estimate the total cost of six grocery Items if their prices are \$2.08, \( \$ 5.46 \), \( \$ 13.95 \), \( \$ 11.73 \), \( \$ 9.05 \), and \( \$ 10.52 \), by rounding each price to the nearest dollar and then adding. The estimate of the total cost of the grocery litems is \( \$ \) 53 (Type a whole number.) The actual total cost of the grocery tiems is \$ \( \square \) .
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Beyond the Answer
To estimate the total cost, let's round each price to the nearest dollar: - \$2.08 rounds to \$2 - \$5.46 rounds to \$5 - \$13.95 rounds to \$14 - \$11.73 rounds to \$12 - \$9.05 rounds to \$9 - \$10.52 rounds to \$11 Now, adding these rounded figures together: \$2 + \$5 + \$14 + \$12 + \$9 + \$11 = \$53. Now let's calculate the actual total using a calculator: \$2.08 + \$5.46 + \$13.95 + \$11.73 + \$9.05 + \$10.52 = \$52.79. So the actual total cost of the grocery items is approximately \$52.79. Comparing the estimate of \$53 to the actual cost, the estimate is pretty reasonable—it’s just about 21 cents higher than the actual total! This shows that rounding can give us a good ballpark figure!
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