0.027+9.9×0.27要简便计算用递等式
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![0.027+9.9×0.27要简便计算用递等式](/uploads/image/z/395965-37-5.jpg?t=0.027%EF%BC%8B9.9%C3%970.27%E8%A6%81%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E7%94%A8%E9%80%92%E7%AD%89%E5%BC%8F)
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0.027+9.9×0.27要简便计算用递等式
0.027+9.9×0.27要简便计算用递等式
0.027+9.9×0.27要简便计算用递等式
0.027+9.9×0.27
=0.27x0.1+0.27x9.9
=0.27x(0.1+9.9)
=0.27x10
=2.7
0.027+9.9×0.27
=0.027+(10-0.1)x0.27
=0.027+10x0.27-0.1x0.27
=0.027+2.7-0.027
=2.7