下面各题,怎样简便就怎样计算.(递等式)①18.9-18.9÷1.4+1.1 ②0.25×(4.8-7.5÷3)③2.3×1.5+4.5÷0.75 ④144÷0.6-4.2×3⑤18.5-(5.6+4.8)÷1.3 ⑥2.2×0.25+2.8×0.25⑦1.4×[(7.5+38.4)÷0.9] ⑧(2.5-2.5×0.6)÷0.4
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![下面各题,怎样简便就怎样计算.(递等式)①18.9-18.9÷1.4+1.1 ②0.25×(4.8-7.5÷3)③2.3×1.5+4.5÷0.75 ④144÷0.6-4.2×3⑤18.5-(5.6+4.8)÷1.3 ⑥2.2×0.25+2.8×0.25⑦1.4×[(7.5+38.4)÷0.9] ⑧(2.5-2.5×0.6)÷0.4](/uploads/image/z/1841476-4-6.jpg?t=%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%98%2C%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E5%B0%B1%E6%80%8E%E6%A0%B7%E8%AE%A1%E7%AE%97.%EF%BC%88%E9%80%92%E7%AD%89%E5%BC%8F%EF%BC%89%E2%91%A018.9-18.9%C3%B71.4%2B1.1+%E2%91%A10.25%C3%97%EF%BC%884.8-7.5%C3%B73%EF%BC%89%E2%91%A22.3%C3%971.5%2B4.5%C3%B70.75+%E2%91%A3144%C3%B70.6-4.2%C3%973%E2%91%A418.5-%EF%BC%885.6%2B4.8%EF%BC%89%C3%B71.3+%E2%91%A52.2%C3%970.25%2B2.8%C3%970.25%E2%91%A61.4%C3%97%5B%EF%BC%887.5%2B38.4%EF%BC%89%C3%B70.9%5D+%E2%91%A7%EF%BC%882.5-2.5%C3%970.6%EF%BC%89%C3%B70.4)
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