Addition 3rd Grade

Properties of Addition

100

6 + 0 = 6

What is the Identity Property of Addition?

200

8 + 7 = 7 + 8

What is the Commutative Property of Addition?

300

(7 + 6) + 5 = (6 + 5) + 7

What is the Associative Property of Addition?

400

This property states that you can change the order of the addends and still get the same sum.

What is the Commutative Property of Addition?

500

This property states that the way in which addends are grouped does not change the sum.

What is the Associative Property of Addition?

Addition Patterns

100

1 more than 75

What is 76?

200

2,343; 3,343; 4,343; 5,343 Pattern: Adding ____

What is 1,000?

300

495, 505, 515, ___, ___, 545 Pattern: Adding ____

What is 525, 535, and 10's?

400

10 more than 723 100 more than 723 1,000 more than 723

What is 733, 823, 1,723?

500

1,000 more than 9,876 100 more than 9,876 10 more than 9,876 1 more than 9,876

What is 10,876; 9,976; 9,886; 9,877?

Addition (4-Digit)

100

1,000 + 9,000

What is 10,000?

200

1,234 + 5,678

What is 6,912?

300

9,999 + 1,111

What is 11,110?

400

6,345 + 2,956

What is 9301?

500

7,895 + 3,647

What is 11,542?

Estimate by Rounding

100

Estimate by rounding to the nearest 10. 75 + 12

What is 90?

200

Round to the greatest place. 634 + 788

What is 1,400?

300

Estimate by rounding to the nearest hundred to find the sum. 305 + 853

What is 1,200?

400

Estimate by rounding to the nearest 100 to find the sum. 632 + 583

What is 1,200?

500

Estimate by rounding to the nearest ten to find the sum. 578 + 409

What is 990?

Addition (3-Digit)

100

192 + 464

What is 656?

200

387 + 251

What is 638?

300

834 + 486

What is 1320?

400

123 + 456

What is 579?

500

999 + 111

What is 1,110?