Add
Subtract
Estimate the sum or difference
Properties of addition
100

243 + 125 =

368

100

425 - 213= 

212

100

123 + 245

100 + 200= 300

100

Which property of addition is shown?

(6 + 2) + 3 = 6 + (2 + 3)

Associative property

200

536 + 287=

823

200

863 - 427= 

436

200

540 - 385

500 - 400 =100

200

Which property is shown?

235 + 0 = 235

Identity property 
300

1,245 + 678=

1,923

300

1,204 - 689= 

515

300

1,235 + 2,468 = 

1,000 + 2,000 = 3,000

300
Which property is shown?

45 + 39 = 39 + 45

Communitive property

400

3,742 + 2,659 = 

6,401

400

2,315 - 1,478= 

837

400

2,175 - 856=

2,000 - 900= 1,100

400

Which property lets you add numbers in any order?

Communitive property

500

37,428 + 26,590 = 

64,018

500

4,003 - 2,756= 

1,247

500

2,378 + 4,629

2,000 + 5,000= 7,000

500

Which property says grouping numbers differently and get the same sum?

Associative property 

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