Вычисли удобным способом:

374 - (200+74) =

743 - (500+20) =

313 - (107+206) =

635 - (80+135) =

426 - (326+10) =

529 - (64+136) =

681 - (81+130) =

377 - (37+140) =

295 - (157+43) =

Найди неизвестное:

485+Х=700 317-Х=283 Х-148=359

Х+250=867 632-Х=247 Х-465=175

374 - (200+74) = 100

743 - (500+20) = 223

313 - (107+206) = 0

635 - (80+135) = 420

426 - (326+10) = 90

529 - (64+136) = 329

681 - (81+130) = 470

377 - (37+140) = 200

295 - (157+43) = 95

485+Х=700

х=700-485

х=215

Х+250=867

х=867-250

х=617

317-Х=283

х=317-283

х=34

632-Х=247

х=632-247

х=385

Х-148=359

х=359+148

х=507

Х-465=175

х=175+465

х=640