Show:
Rounding to the Nearest Ten
Addition
Subtraction
Rounding to the Nearest Hundred
Explanation Required
100
On Tuesday, 128 people attended a movie. What is 128 rounded to the nearest ten?
What is 130.
100
An ice-skating rink rents 316 pairs of skates in December and 455 pairs of skates in January. How many pairs of skates were rented in December and January altogether?
What is 771.
100
Kara wants to sell 420 candy bars to raise money for the school carnival. She already sold 237. How many more candy bars does Kara need to sell to reach her goal?
What is 183.
100
Sally and her friends collected baseball cards. Sally collected 273 cards, Tommy collected 160 cards, Bobby collected 321 cards, and Susie collected 379 cards. What is the best estimate of the total number of cards collected?
What is 1,100
100
Kelly drove 121 miles to New York City. Then she drove 347 miles back to Boston. How many miles did Kelly drive? Explain how you got your answer.
What is 468. I added the number of miles together because the question is asking how many miles Kelly drove. This means they are looking for the total number of miles.
200
We have 627 books in our classroom library. What is 627 rounded to the nearest ten?
What is 630.
200
On Wednesday, 323 girls and 409 boys wore sneakers to school. How many students wore sneakers to school on Wednesday?
What is 732.
200
A music school has 345 boys playing the drums and 212 girls playing the drums. How many more boys than girls play the drums?
What is 133.
200
The mall parking lot had 727 parking spots. Another 115 spots were added to the parking lot. What is the best estimate of the total number of spots rounded to the nearest hundred?
What is 800.
200
Gino sold 478 pizzas on Saturday night. What is 478 rounded to the nearest hundred? Explain how you got your answer.
What is 500. Since I need to round to the nearest hundred I underlined the hundreds digit. Then I looked right next door to the 7. The 7 is 5 or greater so I need to add one more to the 4 which makes it a 5. Since I am rounding to the nearest hundred I need two zeros.
300
On Monday, 449 students visited the zoo. On Tuesday, 408 students visited the zoo. What is the total number of students who visited the zoo on Monday and Tuesday rounded to the nearest ten?
What is 860
300
Which property of addition describes this number sentence? 9+0=9
What is the identity property of addition.
300
John drove a total of 456 miles. He drove 209 miles on the first day. How many miles did he drive on the second day?
What is 247.
300
The store had 137 notebooks. What is 137 rounded to the nearest hundred?
What is 100.
300
Dan drove 240 miles to Tampa on Wednesday. On Thursday, he drove 368 miles to Miami. How many more miles did Dan drive on Thursday than on Friday? Explain how you got your answer.
What is 128.
400
There are 89 girls and 103 boys in the third grade. What is total number of third graders rounded to the nearest ten?
What is 190.
400
On Tuesday 518 students visited the aquarium. On Wednesday, 378 students visited the aquarium, and on Thursday, 623 students visited the aquarium. How many students visited the aquarium on Tuesday and Thursday?
What is 1,141.
400
The shop has 39 brown sugar granola bars and 26 honey granola bars. How many more brown sugar granola bars are there than honey granola bars?
What is 13.
400
There are 171 students in the fourth grade. What is 171 rounded to the nearest hundred?
What is 200.
400
Jenna sold 673 boxes of cookies to raise money for a charity. What is 673 rounded to the nearest ten? Explain how you got your answer.
What is 670
500
Debbie is making a fruit salad for the school picnic. She is using 17 apples, 28 bananas, and 19 pears. What is the total number of pieces of fruit she is using in the fruit salad rounded to the nearest ten?
What is 60.
500
Which of these number sentences shows the Commutative Property of Addition? a. 24+0=24 b. 56=55+1 c. 45+6=6+45
What is choice C. 45+6=6+45
500
Kate and Mike are playing a video game. Kate scored 138 points less than Mike. Mike's score is 634. What is the best estimate of Kate's score?
What is 500
500
On Monday, 623 students visited the museum. On Tuesday, 349 students visited the museum and on Wednesday 343 students visited the museum. What is the best estimate of the total number of students that visited the museum rounded to the nearest hundred?
What is 1,300
500
Frank finds the sum of two addends. The sum is odd. Which sentence is true about the addends? a. Both addends are odd. b. Both addends are even. c. The addends are both odd or both even. d. One addend is even and one addend is odd.
What is choice D.