问题
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1, 8, 22, 50, 99, () A.120 B.134 C.142 D.176
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1, 8, 22, 50,(), 176 A.99 B.102 C.106 D.108
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1 8 22 50 99 ()A.120B.134C.142D.176
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1,8,22,50,99,() A.120 B.134 C.142 D.176
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用简便方法计算.0.3×2.5×0.40.78×1012.5×(8+0.4)1.25×0.7×0.89.8×2.550.8×101-50.84.6×99+4.60.25×32×0.125
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1,8,22,50,99,()A.120B.134C.142D.176