直接写得数.
+
=
÷
=
﹣
=
+
=
+
=
+
+
=
+
﹣
=
×9=
×
=
÷
=
×
=
÷
=
直接写得数
+
= 1﹣
=
﹣
=
﹣
=
×
=
×
= 0×
=
÷6=
÷8= 2﹣
=
÷
=
÷
=
脱式计算
125×﹣45×
×
+
×
3×(
+
)﹣
×(17+51)
÷[(
+
)×
]
×[
﹣(
﹣
)]
神机妙算细又巧.
+
×
﹣
83×
(
+
)×15×34
(21+)÷
1﹣
×(
÷
) 5÷[(
﹣
)×
].
直接写出得数
÷
=
×
=
×
=
÷
=
﹣
=
÷6= 0.64×
=
+
=
+
= 18﹣
= 1÷
= 75%÷3=
用递等式计算,能简算的要简算.
(1)(12.5×8﹣40)÷0.6
(2)+(
﹣
)×
(3)6.8×3.57+0.43×6.8
(4)+2
+
+3
.
能简便的用简便计算.
798+10570÷35 9.81×0.1+0.5×98.1+0.049×981
(1﹣×
)÷(
+
)
+
+
…+
+
2008×20092009﹣2009×20082008 2÷[5
﹣4.5×(20%+
)]
脱式计算,能简算的要简算.
(1)496﹣23×16
(2)2.9×3.6+2.9×6.4
(3)[1﹣(+
)]×24.
计算
1735+450÷18×15;
0.51÷+9.49×3.5;
2.04×[1÷(2.1﹣2.09)];
.
计算下面各题.
(÷3﹣
)×
;
÷[
×(
+
)];
(+
)÷
+
; 0.5÷[10.6÷(4.5+0.8)].
试题篮
()