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计算下面各题.(能简算的要简算)(253-195)×(72÷6)21.09-(2.35+13.87)205+153÷17×552×98[510-(150+40×3)]÷1637×99+375.4+[3.2+(63.54-8.97)]2.07-0.29+1.93-2.71
题目详情
计算下面各题.(能简算的要简算)
(253-195)×(72÷6) | 21.09-(2.35+13.87) | 205+153÷17×5 |
52×98 | [510-(150+40×3)]÷16 | 37×99+37 |
5.4+[3.2+(63.54-8.97)] | 2.07-0.29+1.93-2.71 |
▼优质解答
答案和解析
=58×12
=696
(2)21.09-(2.35+13.87)
=21.09-16.22
=4.87
(3)205+153÷17×5
=205+9×5
=205+45
=250
(4)52×98
=52×(100-2)
=52×100-52×2
=5200-104
=5096
(5)[510-(150+40×3)]÷16
=[510-(150+120)]÷16
=[510-270]÷16
=240÷16
=15
(6)37×99+37
=37×(99+1)
=37×100
=3700
(7)5.4+[3.2+(63.54-8.97)]
=5.4+[3.2+54.57]
=5.4+57.77
=63.17
(8)2.07-0.29+1.93-2.71
=(2.07+1.93)-(0.29+2.71)
=4-3
=1
(1)(253-195)×(72÷6) |
=696
(2)21.09-(2.35+13.87)
=21.09-16.22
=4.87
(3)205+153÷17×5
=205+9×5
=205+45
=250
(4)52×98
=52×(100-2)
=52×100-52×2
=5200-104
=5096
(5)[510-(150+40×3)]÷16
=[510-(150+120)]÷16
=[510-270]÷16
=240÷16
=15
(6)37×99+37
=37×(99+1)
=37×100
=3700
(7)5.4+[3.2+(63.54-8.97)]
=5.4+[3.2+54.57]
=5.4+57.77
=63.17
(8)2.07-0.29+1.93-2.71
=(2.07+1.93)-(0.29+2.71)
=4-3
=1
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