算一算,我知道.
直接写出得数.
1﹣×
= ; 375+450÷18×25= ;
×16= ;
×(
﹣
)= ;
÷[(
+
)×15]= ;
÷
= ;
(0.75﹣)×(
+
)= ; 3﹣
﹣
= ; 4×25%= ;
(+
)÷
+
= .
口算.
18÷÷
= ; 1﹣
×
= ; 4﹣(
)= 3
;
= ;(
)÷
= ;(
)÷
= .
直接写得数.
7.8﹣5.8= 23.5+6.5= 106.3÷0.1= 6391﹣54=
910÷70= 13﹣
= 0.25
×
= 0.5
+
=
6÷= 3635×20%= .
直接写得数:×
=
÷
=
×8=
+
=
18×2%= 1﹣= 3.5÷18= 137﹣63﹣37=
205﹣199+95=求比值::3= 8.8+1.2=1÷25%=
直接写得数.
4.65+135%= 8÷8= 2002÷22= 0.75÷75%=
÷
÷
=
2﹣﹣
= 7
+7
÷7.5= 2﹣
÷
=(
+
)×35= 2×
÷2×
=