问题
解答题
9.99×22.2+33.3×3.34．
答案
9.99×22.2+33.3×3.34，
=33.3×6.66+33.3×3.34，
=33.3×（6.66+3.34），
=33.3×10，
=333．
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9.99×22.2+33.3×3.34．
9.99×22.2+33.3×3.34，
=33.3×6.66+33.3×3.34，
=33.3×（6.66+3.34），
=33.3×10，
=333．