奥数题简便运算6.8X16.8+19.3X2.26.8X16.8+19.3X3.

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奥数题简便运算6.8X16.8+19.3X2.26.8X16.8+19.3X3.
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奥数题简便运算6.8X16.8+19.3X2.26.8X16.8+19.3X3.
奥数题简便运算
6.8X16.8+19.3X2.2
6.8X16.8+19.3X3.

奥数题简便运算6.8X16.8+19.3X2.26.8X16.8+19.3X3.
6.8×16.8+19.3×2.2
=114.24+42.46
=156.7

6.8×16.8+19.3×2.2
=114.24+42.46
=156.7

156.7