Estimating Decimals Guided Notes Name __________________________ Date _______________ Estimating Addition and Subtraction of Decimals _________________________________________________________________________________________________________________________________________________________ Example1: Kim bought a shirt for $14.78, a scarf for $9.20 and a belt for $12.35. About how much money did she spend? Practice Estimate each problem. 1). 3.92 + 6.48 2). 6.97 – 2.39 3). Kelly ran 4.35 miles on Monday, 3.67 miles on Tuesday and 3.8 miles on Friday. About how many miles did she run during the week? TeacherTwins©2016

Estimating Decimals Guided Notes Estimating Multiplication and Division of Decimals _________________________________________________________________________________________________________________________________________________________ Example 2: 26.78×2.93 Example 3: Hal paid $42.64 for pizzas. If each pizza cost $16.51, about how many pizzas did he buy? Example 4: 9.67×1.85 Practice Estimate each problem. 1). 567.21 + 34.92 2). 789.78- 3.23 3). 34.3 x 8.9 4). 78.32 ÷ 10.87 5). Yan has $21.98. Will he have enough money to buy five hamburgers that cost $4.89 each? Explain. TeacherTwins©2016