Addition and subtraction!

Arrow way

100

315+200

31_+200_>5515

200

450-200

450_-200_>250

300

650+125

650_+100_>750_+20_>770_+5_>775

400

849-225

849_-200_>649_-20_>629_-5_>624

500

704-329

700_-300_>400_-20_>380_-9_>371

Number bond way

100

290+320

610

200

420-130

290

300

299+234

533

400

654-329

325

500

349+561

910

Double composition

100

187+234

421

200

299+348

647

300

558+263

821

400

869+184

1,053

500

967+245

1,212

Double decomposition

100

300-105

195

200

400-234

166

300

405-206

199

400

617-299

318

500

825-346

479

Wild card

100

Arrow way 

345+210

555

200

Number bond way 

199+231

430

300

Double composition

299+188

487

400

Double composition

487+563

1,050

500

Triple decomposition

1000-452

548