Addition
Subtraction
Subtracting Across 0s
Estimating
Addition Properties
100

4,153+2,988

7,141

100

4,978-2,766

2,212

100

8,052-1,205

6,847

100

Estimate - Round to the nearest thousand.

4,981+6,193

11,000

100

12,769 + 16,065 = ________ + 15,402

13,432

200

2,417+3,573

5,990

200

18,465-6,291

12,174

200
20,008-16,074

3,934

200

Estimate - Round to the nearest hundred.

1,440-933

500

200

Which is not a way to rewrite 1,450 +1,125 + 1,050 = n

A. (1,400 + 1,100 + 1,000) + (50 + 25 +50) = n

B. 1,450 + 1,050 = n

C. 1,000 + 1,000 +1,000 +450 +50 +125 = n

B

300

1,362+1,948

3,310

300

41,542-32,411

9,131

300

40,700-23,984

16,716

300

Estimate - Round to the nearest thousand.

8,352-3,421

5,000

300

(4,200 + 75) + 5 = ______ + (75 + 5)

4,200

400

8,723+2,849+6,419

17,991

400

651,784-482,638

169,146

400

70,000-25,228

44,772

400

Estimate - Round to the nearest ten thousand

55,748 - 28,392

30,000

400

Which is a way to write 3,010 + 2,370 + 1,505 = n?

A. 3,010 + 1,505 = n

B. 3,010 + 1,505 + 2,370 = n

C. 3,000 + 2,300 + 1,500 = n

B

500

12,395+14,609

27,004

500

735,184-255,863

479,321

500

560,043-312,562

247,481

500

Estimate - Round to the nearest ten thousand

652,198 + 49,753

700,000