Estimation Practice

On Saturday, a florist sold 3 types of flowers. She sold 52 roses. She sold 48 daisies. She sold 39 mums. Which is the best estimate of the number of flowers the florist sold on Saturday?

• 110

• 120

• 130

• 140

A forester planted 3 types of trees in a park last year.

He planted 421 oak trees.

He planted 222 elm trees.

He planted 197 fir trees.

Write an expression to best estimate the difference between the number of oak trees and fir trees he planted?

Mathematical Equivalence

ON

Coach Johnson ran 15 miles on Monday, 18 miles on Tuesday, and 20 miles on Wednesday.

Estimate how many miles Coach Johnson ran on all 3 days?

• 50

• 55

• 60

• 65

The stadium has 922 seats on the home side.
There are 598 seats on the visitor side.
Which number sentence shows the best way to estimate how many MORE seats the home side has than the visitor side?

• 900-600=300

• 900-500=400

• 800-600=200

• 900+600=400

On Sunday, a baker sold 3 types of bread.

He sold 62 baguettes.

He sold 57 loaves.

He sold 45 buns.

Which is the best estimate of the number of breads the baker sold on Sunday?

• 150

• 160

• 170

• 180

A hammerhead shark at the Denver Aquarium weighs 329 pounds. Kimberly located the weight of the shark on the number line.

About where would she have marked it on the number line?

Estimate by rounding to the nearest thousand: 7,428 + 2,267.

• 9,000

• 8,000

• 10,000

• 7,000

Jordan says that the best way to estimate this sum is to round to the nearest hundred. Joy says the best way to estimate is to round to the nearest thousand. Who is correct?

• Jordan is correct.

• Joy is correct.

• Both are correct.

• Neither is correct.

Estimate the sum or difference by rounding: 7,287 + 638.

• 7,900

• 8,000

• 8,100

• 8,200

Estimate by rounding to the nearest ten: 765 - 236.

• 530

• 540

• 550

• 520