1. 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.
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2. Using Estimation Strategies
COURSE 2 LESSON 1-1
Using Estimation Strategies
Suppose you have saved $ 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.
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3. Using Estimation Strategies
COURSE 2 LESSON 1-1
Using Estimation Strategies
Use rounding to estimate to the nearest tenth.
– 30.19
Use front-end estimation or compatible numbers to estimate.
÷ 9.84
about 7.1
about 34.3
about 34
about 6
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