Using Estimation Strategies COURSE 2 LESSON 1-1 At a snack shop, you order a taco that costs $3.79, a juice that costs $.89, and a yogurt that costs $1.39. Estimate the total cost of your order. Step 1: Add the front-end digits. Step 2: Estimate the total number of cents to the nearest dollar. $3.79 $1.39 + $0.89 $4 about $1 $2 = $6 $3.79 $1.39 $0.89 } The total cost is about $6. Check Round to the nearest whole dollar: $4 + $1 + $1 = $6. The answer checks. 1-1

Using Estimation Strategies COURSE 2 LESSON 1-1 Using Estimation Strategies Suppose you have saved $61.80. About how many CDs can you buy if each costs $15.95? 61.80 15.95 Set up the quotient. 64 16 Choose compatible numbers such as 64 and 16. 4 Simplify. You can buy about 4 CDs. 1-1

Using Estimation Strategies COURSE 2 LESSON 1-1 Using Estimation Strategies Use rounding to estimate to the nearest tenth. 1. 5.75 + 1.34 2. 64.54 – 30.19 Use front-end estimation or compatible numbers to estimate. 3. 31.28 + 3.05 4. 59.63 ÷ 9.84 about 7.1 about 34.3 about 34 about 6 1-1