Estimating
265 + 426
700
78+421
499
3,898-1,299
2,599
Doug saw 5 elephants at the Santa Barbra Zoo and 9 elephants at the San Diego Zoo. How many total elephants did he see at both Zoos? Draw a picture and write an equation.
5+9=e
e=14 elephants
8,908-2,698
3,000
526+276+1,086
1,888
1,902-903
999
Daria's book has 323 pages. She read 141 pages. Make a model to find the number of pages (p) she has left to read.
182 pages
A baseball team averaged 17,435 wins. Another team averaged 47,491 wins. ABOUT how many more wins did the second team have?
About 30,000
The school printed 325 flyers Wednesday, 468 Thursday, and 815 Friday. How many were printed in total?
1,608
Joe got 34,867 points playing a video game. Carlos got 29,978 points. How many more points did Joe get then Carlos?
4,889
In 2010, an animal shelter found homes for 1,645 cats and dogs. If 1,218 of the pets were dogs, how many cats (c) were adopted in 2010. Draw a model and write an equation
1,645-1,218=c
c=427 cats
Estimate by rounding to the nearest 10s to find the difference: 2024-1623
400
In april 5,326 books were checked out. In May, 3,294 were. How many were total?
8,620 books
A musical group made 8,000 copies of a CD. So far, they sold 6,280 copies. How many copies are left?
1,720 copies
While shopping, Janet bought a shirt for $8, a pair of jeans for $22, mittens for $5, and a hat for $10. Write an equation AND solve to find out how much she spent.
$8+$22+$5+$10=p
p=$45
Alex sold 86 tickets to a talent show on Thursday, 103 tickets on Friday, and 487 on Saturday. How many tickets did he sell?
about 700 tickets
There were 10,453 items checked out of the public library one week. The next week, 12,975 items were checked out. A week later, 9,643 items were checked out. How many items were checked out in three weeks?
33,071 items
On Thursday, 10,296 people attended a college basketball home game. The next week 12,000 people attended an away game. How many more people attended the away game than the home game?
1,704 more people
Manuel has 60 minutes to get to karate class. If it takes him 27 minutes to ride his bike to class and 10 minutes to change into his karate uniform, how much time does he have before he leaves his house?
27+10= 37
60-27= 23 minutes