简便计算:
1000÷32÷0.25÷1.25166×
2
×3
×5
÷(3.35×5.625×2.12)
直接写得数.
1﹣
+
=1÷
×
=0.5﹣
+0.5﹣
=
1+
=(
+
)×24=7÷
×7÷
=
8.1﹣0.9=72÷0.4=1.25×8=
计算下面各题,能简算的要简算.
(1)(
+
)×15(2)
×
+
×
(3)
×
×
(4)2.5×97×0.4(5)1.25×97×8(6)1.25×32×2.5×97
(7)0.36×101(8)0.36×98(9)
﹣
×
(10)
+
×
(11)
+
×
(12)
﹣
×
(13)90×
(14)86×
(15)
×
﹣
×
(16)0.36×101﹣0.36(17)0.36×99+0.36(18)
×
﹣
.
计算:
4×25+24×5=125×32=
﹣
=
+75%=4π×25%=
+
×32=
脱式计算,怎样算简便就怎样算
①600﹣480÷12
②9×
÷
③(80﹣9.8)×0.6﹣2.12
④35×(1﹣
)÷
⑤3÷[
×(
﹣
)]
⑥(1﹣
)×(
+
)