用简便运算计算19.9×0.48+4.8×0.01
19.9Ã0.48+4.8Ã0.01
=4.8*ï¼0.01+1.99ï¼
=4.8*2
=9.6
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=4.8*ï¼0.01+1.99ï¼
=4.8*2
=9.6
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