Lesson 2.4

Estimate the product by rounding.

2 × 6,254

• 12,000

• 11,000

• 9,000

• 13,000

Estimate the product by rounding.

9 × 54

• 450

• 480

• 60

• 540

Estimate the product by rounding.

5 × 5,503

• 30,000

• 40,000

• 35,000

• 25,000

Find two numbers the exact answer is between.

3 × 567

• 1,500 and 1,800

• 1,600 and 1,800

• 1,500 and 1,700

• 1,600 and 1,700

Find two numbers the exact answer is between.

6 × 7,381

• 42,000 and 48,000

• 41,000 and 48,000

• 42,000 and 45,000

• 40,000 and 48,000

Find two numbers the exact answer is between.

8 × 684

• 4,800 and 5,600

• 4,900 and 5,600

• 4,800 and 5,400

• 4,200 and 5,600

Isaac drinks 8 glasses of water each

day. He says he will drink 2,920 glasses of

water in a year that has 365 days. Is the exact

answer reasonable? Explain.

• Yes, it is reasonable because it is between the estimates of 2,400 and 3,200

• Yes, it is reasonable because it is between the estimates of 2,500 and 3,500

• Yes, it is reasonable because it is between the estimates of 2,400 and 1,200

• No, it is not reasonable because it is between the estimates of 2,400 and 3,200

Most Americans throw away about

1,365 pounds of trash each year. Is it

reasonable to estimate that Americans

throw away over 10,000 pounds of trash

in 5 years? Explain.

• No, a reasonable estimate is between 5,000 and 10,000 pounds.

• No, a reasonable estimate is between 50,000 and 10,000 pounds.

• No, a reasonable estimate is between 2,000 and 15,000 pounds.

• Yes, a reasonable estimate is between 5,000 and 10,000 pounds.

A theater has 4,650 seats. If the theater sells

all the tickets for each of its 5 shows, about

how many tickets will the theater sell?

• 25,000 tickets

• 20,000 tickets

• 24,000 tickets

• 26,000 tickets

Mr. Turkowski bought 4 boxes of envelopes

at the office supply store. Each box has 500

envelopes. How many envelopes did Mr.

Turkowski buy?

• 2,000

• 3,000

• 4,000

• 1,000