7.8乘以11与89的和,再减去609,差是多少?
直接写出得数.
0.44++
+0.6
+2
×2
﹣2
÷
(4
﹣2
)÷(1
+2.4)
48200﹣156×720÷39(3.06÷0.25+2.76)×0.2[3÷(3﹣2.4×
)]×0.2.
0.38×7﹣+4×
.
计算:
(1)208×145﹣24990÷238
(2)10﹣1
×3
﹣1
÷1
(3)(2.76÷0.3﹣4)×(0.25+
)
(4)[3﹣(0.2+
)×4.5]÷2
(5)(15.4﹣6×
)÷(2+
)
简算
(1)12.96﹣7.31﹣2.69
(2)59.6×3+6.625×59
(3)12.5×2.5×4×0.8
(4)(+
+
)×24.