Post on 30-Dec-2015
3.6 Solving Decimal Equations
Objective: Find exact and approximate solutions of equations that contain decimals.
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
Round 7.8199 to the nearest tenth.
Round 1.0621 to the nearest hundredth
Round 3.8792 to the nearest thousandth
Practice
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.
Four people are sharing the cost of a monthly
phone bill of $58.25. What is each person’s share of the bill?