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160÷40+40=
(27+53)×4=
60-43=
90-61=
250-150÷50=
240÷4×20=
300÷(95-90)=
100-38=
170-56=
91÷13×11=
(72-24)÷12=
420÷2-200=
300-49=
120-12=
120+30×2=
(90-12)÷26=
80-60÷20=
200-41=
200-89=
84÷2-37=
95-(74-50)=
3×30+70=