Place Value
Rounding and Estimation
Real World
Addition
Subtraction
100
500 + 30 + 6 in standard form
536
100
Round 451 to the nearest ten and hundred.
450 and 500
100
Bob has 145 legos. George has 63 fewer legos than Bob. How many legos does George have?
George has 82 legos.
100
305 + 512
817
100
154 - 61
93
200
Put in order from greatest to least: 46, 640, 64, 460
46, 64, 460, 640
200
Round 345 to the nearest ten and hundred.
350 and 300
200
76 people ride Bus D in March. 18 fewer people ride Bus E in the same month. a. How many people ride Bus E in March B. How many people ride both buses in March?
a. 58 people ride Bus E in March. b. 94 people ride both buses in March.
200
258 + 95
353
200
115 - 29
86
300
Compare: 998 ___ 989
>
300
Joe sold 145 cups of lemonade. Jim sold 218 cups of lemonade. About how many cups did the sell in all?
They sold about 300 (or 370) in all.
300
A supermarket has 213 red and green apples. 68 are green apples. a. How many of the apples are red? b. How many more red apples than green apples does the supermarket have?
a. 145 apples are red. b. There are 82 more red apples than green apples.
300
406 + 55
461
300
284 - 91
193
400
Write in standard form: five hundred twenty-seven
527
400
Bookshelf one has 549 books. Bookshelf two has 398 books. About how many books are there in all?
There are about 900 books in all.
400
200 people visit the Children's Museum on Monday. On Tuesday, there were 75 more people at the museum than on Monday. What is the total number of visitors for both days?
There were 475 visitors total for both days.
400
247 + 88 = __
335
400
352 - 199
153
500
Fill in the missing numbers 145, 135, 125, 115, ____, _____
105, 95
500
Mark had $149 He spent $52 on a new video game. He also spent $17 on a new book. About how much money does he have left?
He has about $80 left
500
Michael has 154 songs in his audio device. He has 98 more songs than Peter. How many songs do they have in all?
They have 210 songs in all.
500
379 + 154 = __
533
500
527 - 346 = __
181
M
e
n
u