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9.99×22.2+33.3×3.34 1/3+1/15+1/35+1/63+1/99+1/143
人气:114 ℃ 时间:2020-05-04 06:56:48
解答
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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