1-0.009=0.25×101=3÷0.03=6π≈×=÷=+=31×199≈

发布时间:2020-08-05 20:38:21

1-0.009=0.25×101=3÷0.03=6π≈×=÷=+=31×199≈

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解:1-0.009=0.991,0.25×101=25.25,3÷0.03=100,6π≈18,×=,÷=,+=,31×199≈6000.故
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