Addition
Subtraction
Unknown Numbers
Estimation
Word Problems
100

345 + 234

345 + 234 = 579

100

764 - 234= 

530

100

___ - 13 = 54 - 23 

44

100
What number is a reasonable estimate for 

4,845 + 3,200 = ____

8,000

100

Emma's Restaurant made 3,678 pizzas last year. This year, the restaurant made 5,983 pizzas. How many pizzas did the restaurant make in the past two years in total? Use the CUBES strategy to solve. 

9,661 pizzas

200

Solve: 4,345 + 3, 124 = ?

4,345 +3,124 = 7,469

200

6,000 - 2,355

3,645

200

20 - 11 = ___ - 21

30

200

What is a reasonable estimate for 

5,609 - 1,942 = ____

4,000

200

Mrs. Lee's 4th Grade Class practiced spelling 3,189 words last year. This year, they has practiced spelling 1,498 words. How many words has Mrs. Lee's class practiced spelling in the past two years in total? Use the CUBES strategy to solve. 

4,687 spelling words

300

12,873 + 26, 325 = ?

12, 873 +26,325 = 39,198

300

43,366 - 21,932 = 

21,434

300

345 + 642 = 445 + ___

542

300

What is a reasonable estimate for 

6,212 - 4,199

2,000

300

Brody's bakery sold 5,346  loaves of bread last year. This year, the bakery sold 2,588 loaves. How many loaves did Brody's bakery sell in the past two years in total? Use the CUBES strategy to solve.

7,934 loaves of bread

400
123,456 + 456,678 = ?

580,134

400

872,128 - 345,023 = 

527,105

400

567 + ___ = 667 + 100

200

400

What is a reasonable estimate for 

8,589 + 340 = _____

9,300

400

Mrs. C travels to France and climbs The Eiffel Tower. The Eiffel Tower is 1,024 feet. She has also been up the Space Needle in Seattle, WA which 605 feet. How many more feet did Mrs. C climb to get up to the Eiffel Tower than the Space Needle? Use the CUBES strategy to solve. 

Mrs. C climbed 419 more feet to get up the Eiffel Tower
500

4,978 + 2,321 + 1,573= ?

8,872

500

900,000 - 734,832 = 

165,168

500

4,234 + ___ = 4,532 + 123 

421

500

What is a reasonable estimate for 

9,176 - 512 = ____

8,500

500

Mrs. Chapman's class have coded for a total of 745 minutes so far. Their goal is to get to 2,000 minutes of coding. How many more minutes do they need to code to reach their goal? Use the CUBES strategy to solve. 

1,255 more minutes

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