100道数学脱式计算中等难度(急)
问题描述:
100道数学脱式计算中等难度(急)
答
/是分数线1.3/7 × 49/9 - 4/32.8/9 × 15/36 + 1/273.12× 5/6 – 2/9 ×34.8× 5/4 + 1/45.6÷ 3/8 – 3/8 ÷66.4/7 × 5/9 + 3/7 × 5/97.5/2 -( 3/2 + 4/5 )8.7/8 + ( 1/8 + 1/9 )9.9 × 5/6 + 5/610.3/4 ×...