Addition without regrouping
Addition with regrouping
Subtraction without borrowing
Subtraction with borrowing
100

483 + 316

799

100

689 + 107

796

100

549 - 321

228

100

482 - 293

189

200

512 + 137

649

200

698 + 302

1,000

200

983 - 651

332

200

819 - 453

366

300

904 + 53

957

300

489 + 218

707

300

481 - 370

111

300

743 - 466

277

400

701 + 258

959

400

158 + 273

431

400

999 - 516

483

400

821 - 586

235

500

316 + 447

760

500

918 + 63

981

500

876 - 432

444

500

416 - 257

159