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能简算的一定要简算15.25-3.17+0.75-6.8314.5×0.990.25×12.5×325.06×98-5.06+50.6×315.92-4.65-5.920.8×[13-(3.12+5.28)]
题目详情
能简算的一定要简算
15.25-3.17+0.75-6.83 | 14.5×0.99 | 0.25×12.5×32 |
5.06×98-5.06+50.6×3 | 15.92-4.65-5.92 | 0.8×[13-(3.12+5.28)] |
▼优质解答
答案和解析
(1)15.25-3.17+0.75-6.83
=(15.25+0.75)-(3.17+6.83)
=16-10
=6
(2)14.5×0.99
=14.5×(1-0.01)
=14.5×1-14.5×0.01
=14.5-0.145
=14.335
(3)0.25×12.5×32
=0.25×12.5×4×8
=(0.25×4)×(12.5×8)
=1×100
=100
(4)5.06×98-5.06+50.6×3
=5.06×98-5.06+5.06×30
=5.06×(98-1+30)
=5.06×127
=642.62
(5)15.92-4.65-5.92
=15.92-5.92-4.65
=10-4.65
=5.35
(6)0.8×[13-(3.12+5.28)]
=0.8×[13-8.4]
=0.8×4.6
=3.68
=(15.25+0.75)-(3.17+6.83)
=16-10
=6
(2)14.5×0.99
=14.5×(1-0.01)
=14.5×1-14.5×0.01
=14.5-0.145
=14.335
(3)0.25×12.5×32
=0.25×12.5×4×8
=(0.25×4)×(12.5×8)
=1×100
=100
(4)5.06×98-5.06+50.6×3
=5.06×98-5.06+5.06×30
=5.06×(98-1+30)
=5.06×127
=642.62
(5)15.92-4.65-5.92
=15.92-5.92-4.65
=10-4.65
=5.35
(6)0.8×[13-(3.12+5.28)]
=0.8×[13-8.4]
=0.8×4.6
=3.68
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