Estimate by rounding to the nearest hundreds
563
+ 375
---------
563 rounds to 600
375 rounds to 400
1,000
100
Do we have extra information or not enough information? Tell any information that is not needed or that is missing. Solve if you have enough information.
June only has quarters and pennies in her coin collection. She has 85 coins in all. What would you need to know to find out how many quarters June has in her collection?
Not enough information. We need to know the number of pennies June has in her collection.
100
Find the sum.
257
+567
-------
824
100
Subtract.
527
- 338
-------
189
100
What is the Property of Addition of this number sentence?
28 + 79 = 79 + 28
What is Commutative Property of Addition
200
Estimate by rounding to the nearest hundreds
645
+253
--------
645 rounds to 600
253 rounds to 300
900
200
Do we have extra information or not enough information? Tell any information that is not needed or that is missing. Solve if you have enough information.
A notebook costs $2.68 and a pen costs $1.79. Does Jasmine have enough money to buy a notebook and two pens?
Not enough information. You need to know how much money Jasmine has.
200
Find the sum.
821 + 4,543
5,364
200
Subtract.
8,476 - 2,185
6,291
200
What do the parentheses mean in this number sentence?
(12 + 30) + 5 = 12 + (30 + 5)
What is parentheses mean to do the operation inside first
300
Estimate by rounding to the nearest hundred.
778
+ 95
-------
778 rounds to 800
95 rounds to 100
900
300
Do we have extra information or not enough information? Tell any information that is not needed or that is missing. Solve if you have enough information.
There are 35 sopranos in the school choir. The 40 remaining choir members are altos. How many students are in the school choir?
75 students
300
There are 3,164 students at North Elementary School. There are 2,918 students at South Elementary School. How many students are at both elementary schools?
6,082
300
A crayon company makes 17,491 green crayons and 15,063 red crayons. How many more green crayons are made than red crayons?
2,428
300
Which Property of Addition is shown here:
(14 + 27) + 9 = 14 + (27 + 9)
What is Associative Property of Addition
400
Estimate by rounding to the nearest hundred
5,317
+1,734
---------
5,317 rounds to 5,000
1,734 rounds to 2,000
7,000
400
Ernest bought half a dozen sunflowers for $0.65 each, three lilies, and a rose that cost $1.19. What information is needed to find the total amount Ernest spent before tax?
The cost of lilies
400
Find the sum.
15,891
527
+ 1,086
-----------
17,504
400
Subtract.
1,673
- 849
---------
824
400
Which Property of Addition is shown here:
14 + 0 = 14
What is Identity Property of Addition
500
This year, 35,658 people ran in a marathon. Last year, 8,683 fewer people ran. About how many people ran last year?
35,658 rounds to 36,000
8,683 rounds to 9,000
36,000
- 9,000
About 27,000 people
500
Do we have extra information or not enough information? Tell any information that is not needed or that is missing. Solve if you have enough information.
Mrs. Song bought school supplies for her two children, Jason and Kevin. Jason is two years older than Kevin and is in the fourth grade. She spent $38 for Kevin's supplies and $46 for Jason's supplies. If she paid with a $100 bill, how much change did she get back?
Extra information; Jason is two years older than Kevin and is in the fourth grade.
$16
500
Find the sum.
130,283
263,823
+396,538
-------------
790,644
500
Marissa has 4,582 beads to use to make a border on a quilt. She has already used 2,349. How many beads does she have left to use?
2,233
500
Can you use the Identity Property when subtracting?