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Objective: Find exact and approximate solutions of equations that contain decimals.

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How it feels to teach class…

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If the number you are rounding is followed by a 5,6,7,8, or 9 then you round the number up. ex: 41.8 would round up to 42 If the number you are rounding is followed by a 0,1,2,3, or 4 then the number stays the same. Ex: 41.3 would round to 41 Rules for Rounding

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Decimal Places

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Round 7.8199 to the nearest tenth. Round 1.0621 to the nearest hundredth Round 3.8792 to the nearest thousandth Practice

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Always Remember!!!

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Round the Final Answer to the nearest hundredth. -38x – 39 = 118 24x + 43 = 66 22x – 39x = 19

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Solve the equation and round to the nearest tenth. 3.5x – 37.9 = 0.2x 2.4x – 0.9 = 12.4

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Solve the equation and round to the nearest tenth. 14.7 + 2.3x = 4.06 3.25n – 4.71 = 0.52n

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Three people want to share equally in the cost of a pizza. The pizza costs $12.89. What is each person’s share? Round for a practical answer.

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Four people are sharing the cost of a monthly phone bill of $58.25. What is each person’s share of the bill?

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When you say “Percent” you are really saying “per 100” To convert a percent to a decimal, you move the decimal point two places to the left. To convert decimal to a percent, you move the decimal point two places to the right. Percents

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