place value
Round to the nearest 10
round to nearest 100
round to nearest 1,000
round to nearest 10,000
Round to nearest 100,000
estimation addition and subtraction
estimation multiplication and division
100

The value of the one's place  in 214,650

What is zero?

100

     76,771

What is 76,770

100

402,867

What is 402,900?

100

627,820      

What is 628,000?

100

  222,900  

What is 220,000?

100

 235,390      

What is 200,000?

100

 Sandy and Jessica decided to bake cookies for a family picnic. Sandy baked 173 raisin cookies and Jessica baked 729 sugar cookies. How many cookies did they bake? (estimate by 100)

What is 900?

100

There are about 310 passengers in each car of the city train. As there are 8 cars for each train, there are about how many passengers on each train.

What is 2,400?

200

The value of the ten's place 679,575

What is 70?

200

   141,900

What is 141,900?

200

       765,259      

    What is  765,300?

200

   523,348        

What is 523,000?

200

 655,429   

What is 660,000?

200

 304,097        

What is 300,000?

200

There are 437 rose bushes currently in the park. Park workers will plant 444 more rose bushes today.  About how many roses will be in the park. 

What is 800?

200

There are 64 crayons in a deluxe box of crayons. If a school bought 35 boxes, about how many total crayons do they have?

What is 2,400?

300

The value of the hundred's place 905,470

What is 400?

300

   241,172

What is 241,170?

300

852,214  

What is 852,200?

300

 793,424        

What is 793,000?

300

644,039  

What is 640,000?

300

552,714      

What is 600,000?

300

There were 1617 apples in the store. 177 apples are sold at the end of day. approximately how many apples are left in the store. 

What is 1400?

300

53 Loudoun County Buses operate every day. If each bus carries 46 people, about how many people ride the  buses each week. 

       17,500

(50 x 50 x 7)

400

The value of the thousand's place 51,622

What is one-thousand?

400

   769,342

What is 769,340?

400

 704,382      

What is 704,400?    

400

  873,307        

What is 873,000?

400

892,451  

What is 890,000?

400

 834,105        

What is 800,000?

400

The pool takes 1000 liters of water to fill up. If 287 liters were poured the first day and 305 liters were poured the second day, how much more water is needed approximately to fill the pool

What is 400?

400

The tennis team needs to order 5,716 tennis balls for a tournament. If there are 2 balls in each can, about how many cans should the team order.

What is 3000?

500

a digit in one place represents how many times the place to the right

What is 10 times 

500

       360,469

What is 360,470

500

  424,014     

What is 424,000?

500

627,991

What is 628,000?

500

101,233

What is 100,000?

500

792,184

What is 800,000?

500

A man ran for 5482 m before he took a break. After that, he ran for another 5564 m and stopped to talk with a friend. Finally, he returned home running the last 3923 m. Roughly, how long was his route that day in thousands of meters?

What is 15,000 meters?

500

In Central City, there are 29,791 registered voters and 97 voting centers. Each voting center serves about how much of the city’s population.

What is 300?

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