0.37+2.3=
0.125×16=
5÷7=
×3=
+1 =
× =
0.5÷ =
×1 =
1﹣0.94=
8.4÷0.07=
﹣ =
10.01÷10%=
2﹣1 =
1 ÷ =
40÷25%=
已知水渠上口宽2.4米,渠底宽1.2米,求水渠深.
已知每人每天挖土2.5立方米,计划20天完成,每天应安排多少人参加挖水渠?