=0.375=12÷ = %=0.45= %= ÷ .
计算下面各题(能简算的要写出简算过程).①96× ②24×(++)③÷5+× ④(0.5﹣)÷(+)
脱式计算,能简算的要简算:(1); (2);(3); (4)÷23+×+;(5)(+)÷﹣; (6)3﹣3.79+9.7﹣6.21.
50×24= 532+325+268= 345﹣(189+145)== = =
下面各题,怎样简便就怎样算.12÷0.4÷ ÷9+× ÷[(﹣)+(﹣)]24×(++) 80×÷× 1.8×+1.2×﹣.
计算下列各题.(能简算的要简算)3.2×25×12.5= ﹣1.65﹣1.35= ××= [÷(5)]×= 3.85×÷=