Rounding
Estimation
Addition
Subtraction
Mixed Review
100
Round 49 to the nearest 10
50
100
Mrs. Joffre bought 39 pencils at Target and 296 pencils at Office Depot. About many pencils did Mrs. Joffre buy?
about 340 pencils
100
Mrs. Joffre bought 39 pencils at Target and 296 pencils at Office Depot. How many pencils did Mrs. Joffre buy?
335 pencils
100
Micah has 4,725 Legos in his room. Nate has 2,896 Legos in his room. Write a number sentence that can be used to find out how many more Legos Micah has than Nate in his room.
4,725 - 2,896 = ?
100
Round 786 to the nearest 100
800
200
Round 638 to the nearest 100
600
200
Micah has 233 Pokemon cards. Nate has 149 Pokemon cards. What is the approximate difference between the number of Pokemon cards Micah and Nate have?
about 80 Pokemon cards
200
What number makes this number sentence true?
6,937 + 2,818 = ?
9,755
200
Micah has 233 Pokemon cards. Nate has 149 Pokemon cards. What is the difference between the number of Pokemon cards Micah and Nate have?
84 Pokemon cards
200
It rained 28 days in April, 17 days in May, and 13 days in June. What is the best estimate for the number of days it rained during these three months?
about 60 days
300
Round 3,248 to the nearest 10
3,250
300
Lilah has 368 pink stickers. Nate has 271 blue stickers. About how many more stickers does Lilah have than Nate?
about 100 stickers
300
Ms. Hillyer read 138 books on vacation. Ms. Yu read 45 more books than Ms. Hillyer on vacation. How many books did Ms. Yu read?
183 books
300
Lilah has 368 pink stickers. Nate has 271 blue stickers. How many more stickers does Lilah have than Nate?
97 more stickers
300
What number makes this number sentence true?
600 - ? = 218
382
400
Round 4,592 to the nearest 100
4,600
400
Ms. Hillyer read 138 books on vacation. Ms. Yu read 45 more books than Ms. Hillyer on vacation. About how many books did Ms. Yu read?
about 190 books
400
Micah completed 3,287 IXL math problems. Nate completed 4,213 IXL math problems. How many IXL math problems did the two boys complete?
7,500 IXL math problems
400
Micah earned $236 for doing chores around the house. He used $54 on a new Lego set and the rest of his money to buy video games. Draw a model (part-part-whole or strip diagram) to show how much money Micah spent on video games.
See model
400
Create a number line to show 8,763 rounded to the nearest 10
500
Round 57,322 to the nearest 100
57,300
500
There were 5,311 M&Ms in the jar. Mrs. Joffre's class ate 1,942 of the M&Ms. About how many M&Ms are left in the jar?
about 3,400 M&Ms
500
What number makes this number sentence true?
4,845 + 3,871 = ?
8,716
500
What number makes this number sentence true?
3,200 - ? = 876
2,324
500
Create a number line to show 8,763 rounded to the nearest 100