Addition and Subtraction

Round to Subtract

100

Round to the hundreds then subtract.

7689 - 3476

7700-3500 = 4200

200

Round to the hundreds then subtract.

8452 - 2379

8500 - 2400 = 6100

300

Round to the thousands then subtract

6732 - 4982

7000 - 5000 = 2000

400

Round to the thousands then subtract

23,894 - 22,654

24,000 - 23,000 = 1,000

500

Round to the nearest WHOLE number then subtract

590.7 - 381.3

591 - 381 = 210

Round to Add

100

Round to the hundreds then add

784 + 356

800 + 400 = 1,200

200

Round to the hundreds then add

689 + 226

700 + 200 = 900

300

Round to the thousands then add

4567 + 3245

5000 + 3000 = 8000

400

Round to the thousands then add

3821 + 4532

4000 + 5000 = 9000

500

Round to the ten-thousands then subtract

13,464 + 29,089

10,000 + 30,000 = 40,000

4-digit Subtraction

100

2,792 - 1,744

1,048

200

6,855 - 6,536

319

300

8,701 - 5,039

3,662

400

8,145 - 3,978

4,167

500

9,002 - 7,560

1,442

4-digit Addition

100

5,213 + 2,948

8,161

200

7,027 + 3,410

10,437

300

9,784 + 1,169

10,953

400

7,176 + 1,149

8,325

500

9,445 + 7,478

16,923

+ and - Terms

100

5 - 4 = 1

What is the term for the 1 in the equation?

difference

200

8 + 7 = 15

What is the term for the 8 in the equation?

Addend

300

12 - 3 = 9

What is the term for the 3 in the equation?

Subtrahend

400

8 + 7 = 15

What is the term for the 15 in the equation?

Sum

500

12 - 3 = 9

What is the term for the 12 in the equation?

Minuend