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=相关试题
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．直接写得数．
698+560= 1200﹣909= 1.3+0.41= 500÷5÷20=
2.7﹣1.58= 2.5×0.4= 1.4÷3.5= 3.65+0.36×0=
452.4÷48.9≈ 201.2×39≈ 
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1.65+0.8= 3.6﹣0.36= 1÷
= 8.4+99×8.4=
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×[1÷（
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）] 42×0.99
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）×12．
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）×24 1634﹣248÷8×20
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