直接写出得数.
×8=
÷2=
÷
=
×
=
×
=
1÷
=
÷60%=
×15=
﹣
=6.8÷10%=
4.5+
=
×
=
×2=
÷
=
+
=
4×(
+
)= 1÷37.5%=5÷5÷
=32﹣32×
=(
﹣
)×20=
①99999×7778+33333×66666
②3.6×25.4+37.9×6.4
③
﹣
+
﹣
+
﹣
④
×17.6+36÷
+2.64×12.5.
脱式计算.(能简单的要简算)
(1)(2
+2
+2
+2
)×0.25(2)8×4×12.5×0.25
(3)
×[
﹣(
+0.25)](4)(5﹣3.75)÷(
+
)÷1.2.
怎样算简便就怎样算:
6.4×
+6
×(1﹣40%);
+(
﹣
)÷
;
×
×15×9;
×
+
×
.
你认为怎样算简便就怎样算.
5400﹣2940÷28×27
27.98+0.5×0.3﹣18÷1.5
(
+
)÷
+
×67+26×
.