7.1÷4+3.7÷4+12×025简算 .一会就上学了..

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7.1÷4+3.7÷4+12×025简算 .一会就上学了..
7.1÷4+3.7÷4+12×025简算 .一会就上学了..

7.1÷4+3.7÷4+12×025简算 .一会就上学了..
7.1÷4+3.7÷4+12×0.25
=7.1÷4+3.7÷4+12÷4
=(7.1+3.7+12)÷4
=22.8÷4
=5.7

7.1÷4+3.7÷4+12×0.25
=(7.1+3.7+12)÷4
=22.8÷4
=5.7

7.1÷4+3.7÷4+12×025
=7.1÷4+3.7÷4+12÷4
=(7.1+3.7+12)÷4
=23÷4
=23/4