End of the year math by ace Goldberg

Rounding

100

Round 552 to the nearest hundredth

600

200

Round 222 to the nearest 20th

220

300

10,555 to nearest hundredth

10,600

400

1,499 to the nearest thousand

1,000

500

20,059 to the nearest 10th

20,060

multiplying

100

10x100

1000

200

43x5

215

300

255x3

765

400

95x100

9500

500

1111x26

28886

Adding big numbers

100

555+222

777

200

586+99

685

300

686+20

712

400

9000+9000

18000

500

18000+2256

20256

Subtracting big numbers

100

555-96

459

200

768-582

186

300

777-63

714

400

299-77

222

500

9999-555

9444

Mystery

100

What is 555 rounded to the nearest hundred then add 200

800

200

9000-900

8100

300

2500-99

2401

400

609-90

519

500

9000+100-1000+0-100

8000