(61-19)*6 - =252, (16+72)*8 - =704, (91-61)*19 - =570, (38+17)÷11 - =5, (37+73)*15 - =1650, (83+16)*71 - =7029, (81+61)*71 - =10082, 81*71-71 - =5680, 71*81+71 - =5822, 71*51 - =3621,

TSW_ B092023_张梓瀚四則混算

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