递等式计算,能简便的要简便.
46.7×0.18+46.7×0.82÷75%﹣
32×25×12556+144×
直接写得数.
36+79=15÷1%=9.1﹣1.9=7.2÷0.6=+
=
=
﹣
=
=1+30%=0.25×8=
0.52=6π=(+
)×12=
=99×0.8+0.8=
脱式计算.(能简算的要简算)
(1.6×+3.6÷
)×
3.14×+2.625×3.14
[﹣(0.5+
×50%)]÷
1.8×25%+0.25×2.2.
200﹣199+198﹣197+196﹣195+…+4﹣3+2﹣1=×
+
×
+
×
+…+
×
=
1.8+62= 44÷=2.4×5=1÷
+
÷1=
=3.4﹣1
=2﹣1
=
+
+
+…+
=
8.8×(+
+
)= 0.75×16+
= 98÷
=30
﹣(18.8+12×
)=
计算,怎样简便怎样算×
+
×
×
×
(
﹣
)×88
58×+12÷2
67×
÷(3﹣
﹣
)