Find the Difference
Find the Sum
DDD
Find the Product
National Parks
100

12-5 =

7

100

8 + 7 = 

15

100

Solve 2 x 6 using DD

The double of 6 is 12

100

3 x 4 = 

12

100

Ms. McClelland is going to visit Glacier, Grand Teton, and Yellowstone National Park this summer. How many parks will she be visiting in total? 

3

200

22 - 6 = 

16

200

17 + 6 = 

25

200

Solve 4 x 7 using the DD strategy

The double of 7 is 14, the double of 14 is 28

200

40 x 6 = _____. Explain your strategy. 

240

200

Rivers visited Yosemite National Park this summer with his dad. They each hiked 24 miles. How much did they hike in total? 

48 miles. 

300

34 - 13 = 

21

300

743 + 126 = 

869

300

Solve 8 x 6 using the DDD strategy

The double of 6 is 12, the double of 12 is 24, the double of 24 is 48

300

137 x 4 = ____. Explain your strategy. 

548

300

Ms. McClelland's math class went on a field trip to Sequoia National Park. Each student's family had to pay $18.00 to enter. How much money did the student families pay in total? 

126 dollars. 

400

482 - 63 = 

419

400

562 + 129 = 

691

400

Solve 48 x 7. Explain using the DD and DDD strategy. 

336
400

41 x 23 = _____. Use 1 of the 3 strategies to solve and show your work. 

943

400

Coach Lukin led a trip of students to the Grand Canyon. There were 28 students, and they hiked 31 mies each. How much did the group hike in total? 

868 miles.

500

741 - 514 = 

227

500

786+ 175=

961

500

Solve 97 x 42. Explain using the D, DD, and DDD strategy. 

4,074

500

84 x 96 = _______. Show your work with 1 of the three strategies. 

8,064

500

in 2019, there were 517,039 visitors at Lassen National Park. In 2010, there were 384,570 visitors. How many more visitors were there in 2019? 

132,469 more visitors in 2019