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All About Rounding
Math in the Real World
100

Look at the number:  661


The 6 in the hundreds place is ____ times bigger than the 6 in the tens place.  

What is 10?

100

Look at the number:  375,081


The value of the 7 is _________________

What is 70,000.


7 ten thousands = 70,000

100

Use >, <, or = to compare:


45,895  ____  238,947

What is 45,895 < 238,947


5 digits is less than 6 digits.

6 digits is greater than 5 digits.

100

186 rounded to the nearest 10 is _________ 

What is 190?

100

The NFL noted the number of fans in attendance at three games.  

       GAME                            ATTENDANCE

Redskins vs. Titans             65,845 people 

Patriots vs. Colts                68,352 people

Ravens vs. Panthers           67,684 people

The attendance at this game has an 8 in the thousands place.

What is Patriots vs. Colts.

200

True or False:

Each place in a multi-digit is ten times smaller than the position on it's left.

What is true.

200

Write three hundred fifty six thousand, two hundred eight.

What is 356,208.



200

Select the 2 correct answers that finish the comparison.      


                   42,613 < __________


A. 42,614

B. 42,514

C. 42,713


What is A and C?

200

463,067 rounded to the nearest ten thousand is ______________


A. 500,000

B. 460,000

C. 463,000

D. 470,000

B. 460,000


TEN THOUSAND

200

Listed are some major cities and their populations:

   CITY                       POPULATION

Durham                       229,171

Greensboro                  255,124

Raleigh                        405,612


Which city has a population of two hundred fifty-five thousand, one hundred twenty four?

Greensboro

300

This can be said to compare the thousands place and the tens place.


The thousands place is ____ times bigger than the tens place. 

What is 100? 


The hundreds is 10x bigger than tens.  The thousands is 10x bigger than hundreds.  10x10=100.

300

True or False?

The value of 4 in 943,268 is 4,000.

False.


The value of 4 is 40,000.

300

The Kindergarten students have 13,546 letters in their first and last names.  First grade students have 13,585 letters.  Second grade has 13,056 letters.  Third grade has 12,864 and fourth grade has 12,476.  List the number of letters in order from least to greatest.  Then, name the grade that has the most and least amount of letters.

What is 12,476<12,864<13,056<13,546<13,585

Grade with the least letters: 4th Grade

Grade with the most letter: 1st Grade

300

A male tortoise weighs 3,728 pounds.  A female tortoise weighs 2,843 pounds.  To the nearest hundred, what is the total weight of the two tortoises?

What is 6,500 pounds.

300

Disney World had 350,080 visitors in October,         350,489 visitors in November, and 305,939 visitors in December.  What is the order of the months from greatest to least number of visitors.

What is November, October, December

400

The number of lizards in American zoos is 20,000.  The number of birds is ten times the number of lizards.

How many birds are in American zoos?

What is 200,000 birds.

20,000 x 10 = 200,000

400

James went to the Sounds game.  He forgot the number of people that attended the game.  He does remember that the number had four digits and a 3 in the tens place.  

The number James could be thinking of is ______.

What is 1237?

Must have a 3 in the tens and be a four digit number.

400

Compare using <, >, or =.


400,000+5,000+800+90+1 _____ four hundred twenty five thousand, two hundred sixty five.

(write the complete comparison in standard form)

405,891 > 425,265

400

The number of fans who came to the Titans game last season rounded to the nearest ten thousand was 360,000.  Pick all the options that could be the exact attendance.

A. 362,957

B. 400,000

C. 357,486

D. 353,857

What is A and C. 

400

Make the smallest number using all of the following digits:


   5, 7, 3, 8, 0, 6

What is 035,678?

500

Jenny wants to draw 3,200 using 100 flats.  How many 100 flats will she draw? 

What is 32?  


3 thousands = 30 hundreds.  30 hundreds + 2 hundreds = 32 hundreds.

500

Look at the number 736,144.


Record this number in the SIMPLEST DECOMPOSED expanded form.

What is (7x100,000)+(3x10,000)+(6x6,000)+(1x100)+(4x40)+(4x1)?

500

Ms. Sharon wrote a comparison on the board, as shown.

56,625  ____  57,243

Bobby says 56,625 is greater.  Dylan says 57,243 is greater.

Who is correct and why?

A. Bobby is correct because the hundreds digit in 56,625 is greater than the hundreds digit in 57,243.

B. Dylan is correct because the value of the tens place in 57,243 is greater than the value of the tens place in 56,243.

C. Dylan is correct because the value in the thousands place in 57,243 is greater than the value in the thousands place in 56,625.

What is C.

500

The number 25,__00 is missing a digit.  The number rounded to the nearest thousand is 26,000.  List all of the possibilities for the missing digit.

What is 5,6,7,8 or 9.

500

In the 2010 New York City Marathon, 42,629 people finished the race and received a medal.  If you were in charge of ordering medals for the next race, how would you round this number to be sure that there are enough medals for every racer?

What is 43,000 or to the thousands place.