Rounding and Estimating Sums

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

A team sweatshirt costs $38. What is this cost rounded to the nearest ten dollars?

• 10

• 30

• 35

• 40

There are 372 workers at a software company. What is this number rounded to the nearest hundred?

• 200

• 300

• 400

• 500

Which number rounds to 340 when rounded to the nearest ten?

• 345

• 334

• 335

• 346

Which number rounds to 500 when rounded to the nearest hundred?

• 552

• 548

• 446

• 560

Seth bought a pair of sneakers for $48 and a jacket for $64. Estimate the total amount that he spent for the sneakers and jacket

• $112

• $100

• $110

• $120

Mr. Avery’s class made $118 for the fundraiser. Mrs. Bolero’s class made $189 for the fundraiser. Which of these statements shows the best estimate of the total amount both classes raised?

• $100 + $200 = $300

• $125 + $150 = $275

• $100 + $100 = $200

• $200 + $200 = $400

Jill took 32 minutes to complete math homework and 16 minutes to complete reading. About how many minutes did Jill use for homework?

• 48 minutes

• 50 minutes

• 55 minutes

• 40 minutes

Round 34 to the nearest ten.

• 20

• 35

• 30

• 40

Round 65 to the nearest ten.

• 60

• 50

• 70

• 65