3 × 2/9 + 1/3
=2/3+1/3
=1
5/7 × 3/25 + 3/7
=3/35+15/35
=18/35
3/14 × 2/3 + 1/6
=1/7+1/6
=6/42+7/42
=13/42
3 × 2/9 + 1/3 5/7 × 3/25 + 3/7 3/14 ×2/3 + 1/6
1个回答
相关问题
-
怎样简便怎样算． [5/6]×[7/25]×6 [2/5]×[3/14]×[2/3] （[3/7]+[1/2]）×14
-
计算：[1×2×3+3×6×9+5×10×15+7×14×21/1×3×5+3×9×15+5×15×25+7×21×35
-
计算：[1×2×3+3×6×9+5×10×15+7×14×21/1×3×5+3×9×15+5×15×25+7×21×35
-
计算：[1×2×3+3×6×9+5×10×15+7×14×21/1×3×5+3×9×15+5×15×25+7×21×35
-
计算：[1×2×3+3×6×9+5×10×15+7×14×21/1×3×5+3×9×15+5×15×25+7×21×35
-
计算：[1×2×3+3×6×9+5×10×15+7×14×21/1×3×5+3×9×15+5×15×25+7×21×35
-
（1×2×3+3×6×9+5×10×15+7×14×21）/（1×3×5+3×9×15+5×15×25+7×21×35）
-
①（1/2-5/6+5/12-7/24）×24= ②2×3.14-8×3.14+5×3.14-9×
-
(7×1-3×1)+(7×3-3×2)+(7×5-3×3)+.+(7×49-3×25)
-
（1）25×24-14 （2）（138-59）×15 （3）48×52÷2 （4）3.7+1.8+2.6 （5）7.9-