(1)17690÷58×89﹣6759(2)7.35+2.65×(3.9﹣7.632÷2.4)
(3)36﹣8.325+21
﹣1
(4)27
×60+9
×96.
用递等式计算,能简算的要简算
14×75﹣624÷39(7.6﹣3.6÷2)×1.5 ÷
+
×
+
+6.875+
÷(
﹣
)×
〔
﹣(
﹣
)〕÷
.
计算.(能简算得要简算)
3.4÷[(1.25+0.45)×23].
脱式计算:
0.75÷0.25+×
(8.6×0.5﹣
)÷12
÷[
﹣(
+
)]
[800×(1+25%)﹣360×1.5]÷25%15﹣[+(2.5﹣
)]÷0.125.
脱式计算:
(2808÷26﹣10.8)×2.5 9×0.125×12﹣9×0.125×4
(﹣
)÷(
÷
)
×
÷[1﹣(
+
)].