1﹣0.9= 0.32÷2= 0.8×5=
0.9×0.1= 3.11+2.22= 0.36÷0.4=
12.5+12.5×7= 8m﹣6m= a×a=
4.5÷9=
能简算的要简算
1150﹣768÷32 ×
+
÷
1﹣
÷
﹣
﹣(
÷
+
)
+
÷
÷〔2﹣(
+
)〕
用递等式计算下列各题,能简算的要简算.
①37×40+1035÷23②86.5×2.4÷0.3﹣690
③2.8+[2.4÷(90﹣60)]④46.5×43.5+43.5×27.5﹣25×43.5
⑤×
+
×
⑥0.4×7+
×3﹣0.4×3.
用递等式计算
①32×40+450÷18②13.7×1.4﹣3.7×1.4
③÷[
×﹙
+
﹚]④(1﹣
÷
﹚×
.
用递等式计算,能简算的简算:
(1)85×54÷18+745
(2)3.4÷[(1.25+0.45)×23]
(3)
(4)
(5)
(6)(42×29+71×42)÷35.
计算下面各题.
(1)1475﹣16×25(2)÷
×
(3)2.87+5.6﹣0.87+4.4
(4)44﹣24×(5)4.2÷7÷0.6(6)
﹣(
+
)÷
.