下面各题怎样算简便就怎样算.
①1.8×
+2.2×25%
②99×61.25+61.25
③
÷〔
×(
+
)〕
④45+99×99+54.
×
=1.6÷
=(
﹣0.75)÷9=3
÷3
=1÷4
=
6﹣3
﹣2
=(
+
)×36=(0.375÷
﹣1)×4
=
×
×14×19=1
÷6=
直接写出得数
﹣
=
+
=
+
=
﹣
=1﹣
﹣
=
125×16×8=
﹣0=9+
=10.8﹣3.9﹣4.1=0.22=
计算下面各题,能用简便方法计算的要用简便方法计算
(1)(
+
﹣
)÷
(2)
×35÷
(3)(0.8﹣
)÷(
+
)
(4)10×[(
﹣
)÷
].
直接写出得数:
﹣
=
÷
=25%×400=
×
=
×
×
=
1﹣40%=1÷
=
÷7=52=
×
+
×
=