Estimate By Rounding
Estimate by rounding to the nearest hundred. 865-653=
What is 900-700=200
Add 949 + 885 =
What is 1,834
Subtract 600 - 423 =
What is 177
Draw a picture to show the answer: Dan wrote 18 emails on Monday. He wrote a total of 35 emails on Monday and Tuesday. How many emails did he write on Tuesday?
What is 17 emails.
Use mental math to solve. 23 + 39 =
What is 62
Estimate by rounding to the nearest hundred. 2,473 + 1,920=
What is 2,500 + 1,900= 4,400
Add 1,245 + 343 =
What is 1,588
Subtract 8,000 - 3,423
What is 4,577
The musical was performed on Saturday and Sunday. A total of 823 people attended the musical. On Saturday 412 people attended the play. Draw a picture to find the number of people who attended on Sunday.
What is 411 people attended on Sunday.
Becky estimated 109,944 + 209,533 by rounding each number to the nearest thousand. What two numbers did she add together? Round and then add!
What is 110,000 + 210,000 = 320,000
Add 128,108 + 24,321 =
What is 152,429
Subtract 21,001 - 14,878 =
What is 6,123
At the beginning of the garage sale there were 75 items. In the morning 42 items were sold. When the garage sale was over, 13 more items were sold. Draw a picture to show how many items were left over at the end of the garage sale.
What is 20 items
Use mental math to solve. 394 + 256 =
What is 650
What is the best estimate for 2,411 - 2,111?
What is 2,400 - 2,100 = 300
Last year, Ms. Smith walked 434,578 steps. This year she walked 148,230 steps. How many steps did she walk altogether?
What is 582,808.
Jerry had $321,000 in his savings account. He withdrew $39,000 to buy a new RAM truck. How much money is left in his savings account?
What is $282,000
There were 80 students in the geography bee. After the first ten minutes, 23 students were eliminated. After the second ten minutes, 32 more students were eliminated. Draw a picture to solve how many students were left after 20 minutes.
What is 25 students.
Jessie packed 29 books and 94 magazines in boxes for the book sale. Use mental math to find how many books and magazines she packed altogether.
What is 123
John estimated the amount of money in his two bank accounts by rounding each number to the nearest thousand. His one bank account had $328,450 and his second bank account had $953,523. How much money did he have altogether in both accounts?
What is $300,000 + $1,000,000= $1,300,000
In game number 2 of the World Series 69,345 tickets were sold. In game number 3, 82,345 tickets were sold. In game number 4, 83,111 tickets were sold. How many tickets were sold for all three games?
What is 234,801 tickets.
Christie has 409,101 baseball cards in her card collection. Bob has 329,878 fewer baseball cards in his collection. How many baseball cards does Bob have?
What is 79,223.
Billie read a 83 page book over the weekend. He read 15 pages on Friday and 45 pages on Saturday. Draw a picture to show how many pages she read on Sunday.
What is 23 pages.
Mrs. Lucky was born in 1903. In what year was Mrs. Lucky 58 years old? Use mental math to solve.
What is 1961