Addition Properties, Rounding, and Mental Math

Which property of addition says you can change the order of the addends but will still find the same sum?

• Associative

• Identity

• Commutative

• Zero

Which property of addition is shown below?

154 + 0

• Identity

• Associative

• Commutative

What is 28 rounded to the nearest ten?

• 20

• 25

• 30

• 100

What is 153 rounded to the nearest hundred?

• 150

• 100

• 200

• 300

What property of addition says that you can group addends together in any way and will still find the same sum?

• Commutative

• Associative

• Identity

• Zero

What is 362 rounded to the nearest ten?

• 300

• 400

• 360

• 370

What is 249 rounded to the nearest hundred?

• 200

• 240

• 250

• 300

Using mental math, solve 325 + 114.

• 500

• 439

• 400

• 428

Solve 264 + 432 using mental math.

• 573

• 652

• 696

• 725

Which property of addition is being shown below?

35 + 42 = 42 + 35

• Associative

• Identity

• Commutative