Estimating Hundreds

If you were estimating 8,964 + 825, what would be the best place value to round to?

• Thousands

• Hundreds

• Tens

• Don't round at all.

Use compatible numbers to estimate the value of 76 + 26.

• 75 + 25 = 100.

• 80 + 30 = 110

• 76 + 26 = 102

• 70 + 20 = 90

Mr. Smith drove 1,380 miles in the month of August and 656 miles in the month of September. Approximately how many miles did he drive all together.

• 2,000.

• 2,100.

• 2,036.

• 2,500.

Approximately how many students went on the field trip to Washington, DC?
DC VISITORS
7th Graders      4,945.
8th Graders      5,623.
9th Graders      1,989.

• 12,557.

• 13,000.

• 12,600.

• 12,400.

• 140

• 160

• 130

• 200

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.