9.99×22.2+33.3×3.34 1/3+1/15+1/35+1/63+1/99+1/143
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9.99×22.2+33.3×3.341/3+1/15+1/35+1/63+1/99+1/1439.99×22.2+33.3×3.341/3+1/15+1/35+1/63+1/99+1/1439.99
9.99×22.2+33.3×3.34 1/3+1/15+1/35+1/63+1/99+1/143
9.99×22.2+33.3×3.34 1/3+1/15+1/35+1/63+1/99+1/143
9.99×22.2+33.3×3.34 1/3+1/15+1/35+1/63+1/99+1/143
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
1/3+1/15+1/35+1/63+1/99+1/143=1/2x（1-1/3）+1/2x（1/3-1/5）+.....1/2x（1/9-1/11）+1/2（1/11-1/13）=1/2x（1-1/3+1/3-1/5+....+1/9-1/11+1/11-1/13）=1/2x（1-1/13）=1/2x12/13=6/13
9.99×22.2＋3.33×3.34=33.3×3×2.22＋33.3×3.34=3.33×（6.66＋3.34）=33.3
1/3+1/5+1/35+1/63+1/99+1/143=1/3+1/2 (1/3-1/5+1/5-1/7+1/7-1/9+1/9-1/11+1/11-1/13)=11/26
9.99×22.2+33.3×3.34
9.99*22.2+33.3*3.34 简便运算
9.99*22.2+33.3*3.34=怎么算,
9.99乘以22.2加33.3乘以3.34
9.99乘以22.2加33.3乘以3.34
9.99×22.2+33.3×3.34 简便运算
9.99×22.2+33.3×3.34有简便方法吗
9.99*22.2+3.33*3.34
9.99×22.2+33.3×3.34 1/3+1/15+1/35+1/63+1/99+1/143
9.99×22.2+33.3x3.34求简算要过程
9.99*22.2+33.3*3.34要简便方法和详细过程,列梯等式,还有在网上看到了好多6.66,都是这样,就是不知道怎么来的,
99.9×22.2+33.3×33.4
99.9*22.2+33.3*33.4
33.3/22.2=
简便计算（两题）9.99*2.22+33.3*3.34=1/3+1/15+1/35+1/63+1/99+1/143=
22.2×2.3+33.3×1.8简算
9.99*2.22+3.33*3.34 怎么简便计算?
简便运算3.34×3.33+2.22×9.99