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3.6X0.46,列竖式计算并验算

27.6×0.45=12.42 3.78÷3.6=1.05 1.79÷3.6≈0.5 1.2×0.415≈0.50

0.46+0.4×3.6+0.4 =0.46+0.4×(3.6+1) =0.46+0.4×4.6 =4.6×0.1+4.6×0.4 =4.6×0.5 =2.3

0.36x6.4+3.6x0.46-0.36 =0.36x6.4+0.36x4.6-0.36 =0.36×(6.4+4.6-1) =0.36×10 =3.6

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