问题
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4,13,22,31,45,54,(),() A.60, 68;B.55, 61; C.63
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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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用简便方法计算789-296=375+298=25×32×125=800÷32=190÷2÷5=152+261+48+139.
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125×32×25×944×25102×28308×81+308×20-30896000÷125÷825×89×4.
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● 有 4 个网络地址:222.107.16.254/18、222.107.17.01/18、222.107.32.25/18 和222.107.31.55/18,
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● 有 4 个网络地址:222.107.16.254/18、222.107.17.01/18、222.107.32.25/18 和222.107.31.55/18,