1994+199.4+19.94+1.994=?199999+19999+1999+199+19=?如何简便运算?写出主要运算过程

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1994+199.4+19.94+1.994=?199999+19999+1999+199+19=?如何简便运算?写出主要运算过程1994+199.4+19.94+1.994=?199999+1999

1994+199.4+19.94+1.994=?199999+19999+1999+199+19=?如何简便运算?写出主要运算过程
1994+199.4+19.94+1.994=?199999+19999+1999+199+19=?
如何简便运算?
写出主要运算过程

1994+199.4+19.94+1.994=?199999+19999+1999+199+19=?如何简便运算?写出主要运算过程
1994+199.4+19.94+1.994
=1994(1+0.1+0.01+0.001)
=1994*1.111
=1.111(2000-6)
=2222-6.666
=2215.334
¬199999+19999+1999+199+19
=200000+20000+2000+200+20-5
=222220-5
=222215

1994+199.4+19.94+1.994=2215.334
199999+19999+1999+199+19=?222215

1994+199.4+19.94+1.994=2215.334
199999+19999+1999+199+19=222215
绝对准

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