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?

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.