相关试题
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= 25×4×7= 658+125+75= 40×18×5=直接写出得数
40×25= 848+ =2000 64× =1280 42÷21= 400﹣400÷80=
90﹣ =69 840÷210= 
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= 1﹣
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直接写出得数
40×25= 848+ =2000 64× =1280 42÷21= 400﹣400÷80=
90﹣ =69 840÷210= += ﹣= 1﹣=
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= 1﹣
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= 68×32≈
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= 635﹣427= 33÷0.11=
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