小学分数计算题50道小学分数计算题50道45×2/3+1/3×15=7/19+12/19×5-6=1/4+3/4÷2/3=8/7×21/16+1/2=3/7×49/9-4/3=101×1/5–1/5×21=8/9×15/36+1/27=12×5/6–2/9×3=8×5/4+1/4=6÷3/8–3/8÷6=4/7×5/9+3/7×5/9=2/5÷(3/2+4/5)=7/8÷(1/8+1/9)=9×5/6+5/6=3/4×8/9-1/3=4/5×25/16+2/3×3/4=14×8/7–5/6×12/15=17/32–3/4×9/24=3...