| 细心计算 6.3×
(4.5×1.1×4.8)÷(3.3×0.8×0.5) 7÷(7-7×0÷7+7÷7); 18×45(
|
6.3×
=(6.3+3.7)×0.75 =10×0.75 =7.5; (4.5×1.1×4.8)÷(3.3×0.8×0.5) =23.76÷1.32 =18; 7÷(7-7×0÷7+7÷7) =7÷(7-0+1) =7÷8 =0.875; 18×45×(
=18×45×
=675+162 =837. |
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