【题目】用递等式计算
(1)12.5×32×0.25
(2)15.24﹣3.17﹣1.83+4.76
(3)5410﹣4830÷46×24
(4)×+×
(5)÷﹣×
(6)﹣÷(+)
(7)300÷[×(﹣)]
【答案】(1)100;(2)15;(3)2890;(4);(5);(6);(7)4500
【解析】
(1)12.5×32×0.25
=(12.5×8)×(4×0.25)
=100×1
=100
(2)15.24﹣3.17﹣1.83+4.76
=(15.24+4.76)﹣(3.17+1.83)
=20﹣5
=15
(3)5410﹣4830÷46×24
=5410﹣2520
=2890
(4)×+×
=(+)×
=×
=
(5)÷﹣×
=﹣
=
(6)﹣÷(+)
=﹣÷
=﹣
=
(7)300÷[×(﹣)]
=300÷(×)
=300÷
=4500



