作业帮2.74乘以9.9加0.274怎么简便计算?急!快题目!不会写的向我这样写1111乘3333等于2222加44444
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2.74乘以9.9加0.274怎么简便计算?急!快题目!不会写的向我这样写1111乘3333等于2222加44444
2.74乘以9.9加0.274怎么简便计算?急!
快题目!不会写的向我这样写1111乘3333等于2222加44444
2.74乘以9.9加0.274怎么简便计算?急!快题目!不会写的向我这样写1111乘3333等于2222加44444
2.74*9.9+0.274
= 2.74*(10-0.1)+0.274
=27.4 -0.274+0.274
=27.4
2.74x10-0.1x2.74
2.74乘以9.9加0.274
=2.74*9.9+0.274
=2.74*9.9+2.74*0.1
=2.74*(9.9+0.1)
=2.74*10
=27.4
2.74*9.9+0.274
=2.74*9.9+2.74*0.1
=2.74*(9.9+0.1)
=2.74*10
=27.4
2.74x(9.9+0.1)
2.74＊9.9＋0.274＋0＝2.74＊9.9＋2.74＊0.1＝2.74＊（9.9＋0.1）＝2.74＊10＝27.4
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2.74乘以9.9加0.274怎么简便计算?急!快题目!不会写的向我这样写1111乘3333等于2222加44444
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