Justin has 75 cards and Curtis has 85. How many more does Curtis have than Justin?
10
100
If the key words in a story problem are "how many more?" What operation should you use?
Subtraction
200
548+399
947
200
804-367
437
200
Estimate by rounding to the nearest thousand
4,875 + 1,325 =
5,000 + 1,000 = 6,000
200
Jesse has read 645 pages in his book and Christy has read 1,482. How many have they read in all?
2127
200
If the key language in a story problem is "how many in all?" what operation should you use?
addition
300
78,952+ 65897=
144,849
300
5,000-2,658
2,342
300
There are 435 girls at the museum and 389 boys. ABOUT how many kids are there in all?
400+400=800
300
What is the difference between 786 and 497?
289
300
When you are asked to find the sum, what operation should you use?
addition
400
There were 27,382 people at the beach last weekend and 18,490 people at the beach this weekend. How many people were at the beach on both weekends combined?
45,872
400
If the story problem is asking you to find the difference what operation should you use?
subtraction
500
If the story problem tells you to combine, what operation should you use?