计算能简便的要简便:(1)2.5×6.73×4(2)18.6×5.8÷0.6(3)3.25×0.8+6.75÷1.5(4)(6.3×1.4+3.
计算能简便的要简便:(1)2.5×6.73×4(2)18.6×5.8÷0.6(3)3.25×0.8+6.75÷1.5(4)(6.3×1.4+3.7×1.4)×2.5(5)...
计算能简便的要简便:(1)2.5×6.73×4(2)18.6×5.8÷0.6(3)3.25×0.8+6.75÷1.5(4)(6.3×1.4+3.7×1.4)×2.5(5)2.4-25.3÷5.5+7.6(6)3.8÷1.25÷1.25÷8÷8.
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(1)2.5×6.73×4, =(2.5×4)×6.73, =10×6.73, =67.3; (2)18.6×5.8÷0.6, =18.6÷0.6×5.8, =31×5.8, =179.8; (3)3.25×0.8+6.75÷1.5, =2.6+4.5, =7.1; (4)(6.3×1.4+3.7×1.4)×2.5, =[(6.3+3.7)×1.4]×2.5, =(10×1.4)×2.5, =(10+4)×2.5, =10×2.5+4×2.5, =25+10, =35; (5)2.4-25.3÷5.5+7.6, =2.4-4.6+7.6, =(2.4+7.6)-4.6, =10-4.6, =5.4; (6)3.8÷1.25÷1.25÷8÷8, =3.8÷(1.25×8)÷(1.25×8), =3.8÷10÷10, =0.038. |
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