Estimating

Estimating

Open Ended

What is the first step in estimating?

To Estimate

• Round the numbers

• Multiply

• Check to see if final answer is reasonable

Example

Round each factor, cross out the zeros and multiply

Multiple Choice

Find an estimate for

56 x 13 = ?

• 450

• 600

• 500

• 550

Multiple Choice

Find an estimate for

76 x 52 = ?

• 400

• 3,500

• 4,000

• 3,800

Multiple Choice

Find an estimate for

91 x 38 =

• 129

• 2,700

• 3,000

• 3,600