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Rounding
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Estimation
Estimation word problems
166

For 562 + 998, which method produces an estimate that is most accurate to the actual answer?

(a) rounding to the nearest hundred

(b) rounding to the nearest ten

(c) rounding to the nearest ten thousand

(d) rounding does not exist!

(b) rounding to the nearest ten


166

Which digit is a place holder in the number 7,089?

0

166

What is a good estimation for 11 x 14?

140 or 150

166

Building #1 is 36ft tall, Building #2 is 40ft tall, Building #3 is 45ft tall, and Building #4 is 51ft tall. About how tall is Building #6?

About 60ft tall

166
Amy has 52 pennies. John has 35 pennies. About how much money do they have altogether?
He has about $0.90
281

Complete the phrase: "5 or _____ raise the score, 4 or less, let it ____"

1st word: More

2nd word: Rest

281

What is the value (not place value) of the digit 4 in 42,778?

40,000

281

Solve 13 x 17 using the Nikhilam, then round to the nearest tens.

13 x 17 = 221

nearest tens: 220

281

There are 33 people standing in line. About how many fingers total are in the line?

About 300 or 330

281
Nicholas had 97 wrestling medals on his wall. He put 42 in a box in his closet. About how many medals does Nicholas still have on the wall?
He has about 60 medals.
363

What is 29,452,156 rounded to the nearest ten thousands place?

29,450,000

363

What is the expanded form of 5,222,312?

5,000,000+200,000+20,000+2,000+300+10+2

363

Estimate 181 divided by 59

Round the numbers: 180/60 = 30

363

There are 7 donuts in a pack and the serving size is about 4 donuts. If you eat 3 packs about how many servings of donuts did you have?

About 5 servings

363

Ms. Culkin wanted to order coloring books for the entire school. There are 2, 612 students in ps 176. About how many should she order?

About 2,700 to 3,000

415

What is 934,547 rounded to the nearest hundred thousands?

900,000

415

True or false: the digit 6 is in the six thousands place. 

526,911

FALSE! there is no such thing as the "six thousands place". the digit 6 is in the ONE THOUSANDS place.

415

Solve 22 x 28 using the "by one more" method, then round to the nearest tens.

22 x 28 = 618

nearest ten: 620

415

Your car broke down and you have 3 hours to walk to work. The office is 23 miles away and you can walk 9 miles an hour. Can you make it to work in time?

YES! in 3 hours you travel 27 miles so you will make it before 3 hours.

415
Rachel's phone bill is $157 per month. About how much will she pay in 7 months?
She pays about $ 1,120 in seven months.
534

What is 434 + 24,456 rounded to the nearest ten thousands?

Nearest hundred: 400 + 24,500 = 24,900

Nearest ten: 430 + 24,460 = 24,890

Answer and round: 434 + 24,456 = 24,890

534

What is the digit in the one hundred millions place?

341,785,209

3

534

Estimate 2434 divided by 41.

Round 2434 to 2400. Round 41 to 40.

2400/40 = 60

534

There are 1863 peanuts in a bag. You want to share the peanuts with your 9 friends. How many peanuts do each friend get?

About 200 each

534

There are 93 calories in a candy bar. About how many calories are in six candy bars?

About 540 or 600 candy bars