2100÷42(用简便方法计算) 25×64×125(用简便方法计算)
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![2100÷42(用简便方法计算) 25×64×125(用简便方法计算)](/uploads/image/z/18682-34-2.jpg?t=2100%C3%B742%EF%BC%88%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%89+25%C3%9764%C3%97125%EF%BC%88%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%89)
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2100÷42(用简便方法计算) 25×64×125(用简便方法计算)
2100÷42(用简便方法计算) 25×64×125(用简便方法计算)
2100÷42(用简便方法计算) 25×64×125(用简便方法计算)
2100÷42=2100÷7÷6=300÷6=50
25x64x125=(25x4)x2x(8x125)=100x2x1000=200000