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
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