1+12.7+5.9+17.3 270﹣42.5﹣17.5 125×88 130÷25÷4
25×32×125 125×103﹣125×3 22.4×25﹣25×2.4.
用简便方法计算:
(1)73+3.4+27+5.6(2)7.25﹣3.42﹣1.58(3)102×85
(4)363×7+237×7(5)4300÷25÷4(6)88×125÷11.
直接写出得数
6﹣3.75=﹣
=
+0.75=1.5﹣
=
÷6=1÷
﹣
÷1= 7×
÷7×
=(
+
)×4=
计算下面各题,能简算的要简算.
①7.6×0.8+0.42②3.2×1.25×0.25③7.8×1.01
④1.36+0.7×5.4⑤﹣(
﹣
)﹣
⑥
+
﹣
.
直接写得数﹣
=
×1.2=
÷4=21
÷7=(
)2=
2﹣=0.4×0.5=四成+55%=0.99×9+0.99=
÷10%=
计算下列各题,能简算的要简算.
〔﹣(
﹣
)〕÷
=
÷5+5÷
=
÷〔
÷(
﹣
)〕=48×
+3÷7=
×
÷(
﹣
)=62.5%×15+2×
﹣5÷8=