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Magazine Problem 31
Graph the number on a number line. $$0$$
Problem 32
When estimating a quotient, explain what to do if rounding the numbers to one nonzero digit produces a division that is difficult to perform mentally.Then find the actual quotient. \(9979 \div 17\)
Problem 33
Write in exponential form. \(9 \cdot 9 \cdot 9 \cdot 9\)
Problem 34
Write in exponential form. \(12 \cdot 12 \cdot 12\)
Problem 40
Write number in expanded form using powers of \(10 .\) 604,057
Problem 41
Write number in expanded form using powers of \(10 .\) 9,128,020
Problem 42
Write number in expanded form using powers of \(10 .\) 10,945
Problem 44
Solve. The walls in nine offices in an office building are to be painted. Each office is 10 feet long by 9 feet wide and has an 8 -foot ceiling. Each office has a 3 -footwide by 7 -foot-high doorway and a 3 -foot-high by 2-foot-wide window. a. What is the area to be painted? b. If a gallon of paint covers 400 square feet, how many gallons will be needed? c. If each gallon costs \(\$ 14\), what will be the total cost of the paint?
Problem 46
Round \(5,652,992,481\) to the specified place. ten thousands
Problem 47
Round each number so that there is only one nonzero digit. $$32,607$$
