1.916+19.97+199.8的简便计算

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1.916+19.97+199.8的简便计算1.916+19.97+199.8的简便计算1.916+19.97+199.8的简便计算1.916+19.97+199.8=2-0.084+20-0.03+

1.916+19.97+199.8的简便计算
1.916+19.97+199.8的简便计算

1.916+19.97+199.8的简便计算
1.916+19.97+199.8=2-0.084+20-0.03+200-0.2=2+20+200-(0.084+0.03+0.2)
=222-0.314
=221.686

1.916+19.97+199.8
=1.916+20+200-0.03-0.2
=221.686

1.916+19.97+199.8的简便计算
1.916+19.97+199.8=21.086+200-0.2=220.886

=(2-0.084)+(20-0.03)+(200-0.2)
=222-0.314=221.686