Estimate Sums to the Nearest 100

Estimate the sum of 1,141 + 3,249 . Round to the nearest 100.

• 4300

• 4400

• 4500

• 4600

Estimate the sum of 118 + 879. Round to the nearest 100.

• 700

• 800

• 900

• 1000

Estimate the sum of 599 + 843. Round to the nearest 100.

• 900

• 1000

• 1500

• 1900

Estimate the sum of 879 + 145.

• 900

• 1,000

• 100

Round the number to the nearest hundreds.

Estimate the sum.

• 900

• 800

• 700

Round the number to the nearest hundreds.

A museum has 237 works of art on the first floor. The second floor has 349 works of art. The third floor has 219 works of art. About how many works of art in all? (Use greatest place value.)

• 800

• 700

• 750

• 660

To celebrate Halloween a family is counting pumpkin seeds. Max and his dad counted 243; Brita and her mom counted 333. About how many more seeds did Brita and her mom count?

• 85

• 100

• 300

• 500

491 people attended the school play.  422 people attended the football game.  Ryan rounds to the nearest hundred and estimates that 800 people attended both events.  Is his estimate correct?  Explain

• Yes, because 400 + 400 = 800

• No, because 500 + 400 = 900

• No, because he did not estimate correctly.

• Yes, because he estimated correctly.