Estimation to Tens and Hundreds

Estimate to the nearest hundreds and subtract.

843 - 78 = ?

• 720

• 800

• 750

• 700

Estimate to the nearest tens and subtract. 345 - 63 = ?

• 280

• 200

• 290

• 270

Estimate to the nearest hundreds and subtract.

987 - 276 = ?

• 700

• 600

• 690

• 100

Rounding is another way of saying ____________

• addition

• subtraction

• estimation

• tomato

A school bought 722 packages of glow sticks for a party. Each package contained 6 glow sticks. What is the best estimate of the number of glow sticks purchased by the school?

Hint: Round the packages of glow sticks to the tens place**

• 120

• 4,320

• 100

• 4,000

Round to the nearest hundred, then estimate the sum:

123 + 456

• 580

• 600

• 650

• 500

If you have 382, you might say you have ABOUT...

• 400

• 390

• 450

• 350

What is the best estimate for the number 898?

• 900

• 700

• 800

• 600

There are 461 books in the library.

To the nearest hundred, ABOUT how many books are in the library?

• A. 400

• B. 460

• C. 470

• D. 500