Chapter 2

Addition Properties

100

(2+5)+1 = 2+(5+1) belongs to which property of addition?

1. Commutative Property

2. Associative Property

3. Identity Property. 

2.

200

3+0 = 3+3 belongs to which property of addition?

1. Commutative Property 

2. Associative Property

3. Identity Property

3.

300

9+2 = 2+9 belongs to which property of addition?

1. Commutative Property

2. Associative Property

3. Identity Property

1.

400

Which is an example of the Identity Property of Addition?

1. (2+3)+8 = 2+(3+8)

2. 2+3 = 3+2

3. 7+0 = 0+7

3.

500

Which of these is an example of the Associative Property of Addition?

1. (3+5)+9 = 3+(5+9)

2. 4+0 = 0+4

3. 1+8 = 8+1

1.

Adding 4 Digits

100

1,836 + 3,329 =

5,165

200

2,372 + 2,490 = 

4,862

300

5,376 + 3,873 =

9,249

400

6,548 + 2,862 =

9,410

500

7,224 + 1,094 =

8,318

Addition Patterns

100

What is 1 more than 28?

29

200

What is 10 less than 67?

57

300

What is 100 more than 891?

991

400

What is 1,000 than 2,455?

1,455

500

What is 1,000 more than 4,212?

5,212

Estimate Sums

100

Round to the nearest tens. 

32 + 77 =

110

200

Round to the nearest hundreds. 

456 + 213 = 

700

300

Round to the nearest tens. 

763 + 541 = 

1,300

400

Round to the nearest hundreds. 

349 + 321 = 

600

500

Round to the nearest hundreds. 

1,357 + 2,199 =

3,600

Adding 3 Digits

100

654 + 583 =

1,237

200

267 + 634 =

901

300

734 + 754 = 

1,488

400

762 + 480 =

1,242

500

981 + 632 = 

1,613