看谁算得又快又对.
24×3= |
41×6= |
52×8= |
36×5= |
18×10= |
150×6= |
200×8= |
120×3= |
7×6+4= |
4×5﹣9= |
208×6= |
55×6= |
怎样算简便就怎样算.
①9+8÷26+27÷39 ②0.8×[13﹣(3.12+5.28 )]
③÷[
﹣(
﹣
)]④
+(
+
)×
+
.
(1)+
=(2)12×(
+
)=(3)
(6
0.8+6
0.2)=
(4)()×15×17=(5)
+
+
+…+
+
.
371×539+248000×0.371+2130×37.1
1990×1999﹣1989×2000.
脱式计算,能简便的简便.
1.72×+73.8×
= 4.2﹣1.38+5.8﹣3.62 0.125×0.25×32
2÷﹣
÷290.5×99+90.5.
用简便方法计算
511×2002×
2003×2003﹣2002×20047.24×
+0.6×2.41﹣0.65×60%