口算下面各题．
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(1)3.1 ×0.3= |
(2)0.04 ×0.2= |
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(3)0.16 ×0.5= |
(4)0.12 ×6= |
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(5)0.8 ×0.05= |
(6)1.7 ×0.03= |
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(7)1.8 ×0.4= |
(8)2.1 ×4= |
直接写出得数．
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(1)2.5 ×40= |
(2)0.04 ×25= |
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(3)0.25 ×4= |
(4)4 ×0.025= |
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(5)8 ×1.25= |
(6)125 ×0.08= |
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(7)0.8 ×12.5= |
(8)0.125 ×80= |
直接写出得数．
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(1)0.07÷0.7= |
(2)5.4÷0.6= |
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(3)3.4×0.1= |
(4)0.35×0.2= |
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(5)1.23×0.32×0= |
(6)1.18 ＋1.2＋0.12= |
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(7)4.7 －0.54－3.46= |
(8)4×0.25 ＋1.75×4= |
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(9)0.8 －0.8×0.9= |
(10)0.26÷0.1÷2.6= |
直接写出得数．
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(1)7.2÷0.6= |
(2)0.65÷0.5= |
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(3)0.8×0.02= |
(4)0.7×0.9= |
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(5)1÷8= |
(6)10 －0.01= |
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(7)4.7 ＋0.53= |
(8)9.1÷70= |
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(9)4×0.25÷0.25×4= |
(10)4.7
－0.54－4.46＋5.3=