0.345+19.7-2.76简便计算?
3个回答
展开全部
0.345+l9.7一2.76
=0.345+(19.7一2.7)一0.06
=0.345+17一0.06
=17.345一0.06
=17.285
=0.345+(19.7一2.7)一0.06
=0.345+17一0.06
=17.345一0.06
=17.285
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展开全部
0.345+19.7-2.76
=0.345+20-0.3-2.76
=0.345+20-(0.3+2.76)
=20-1+(0.345-0.06)
=19+0.285
=19.285
=0.345+20-0.3-2.76
=0.345+20-(0.3+2.76)
=20-1+(0.345-0.06)
=19+0.285
=19.285
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展开全部
0.345+19.7-2.76
=20.045-2.76
=17.285
=20.045-2.76
=17.285
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