计算下面各题.(能简算的就简算)12.76-(8.9+1.76)1.25×43+114×27+125%×3099×2878×379(23+45)÷(13-14)35×(1-47)÷59.-数学

题目简介

计算下面各题.(能简算的就简算)12.76-(8.9+1.76)1.25×43+114×27+125%×3099×2878×379(23+45)÷(13-14)35×(1-47)÷59.-数学

题目详情

计算下面各题.(能简算的就简算)
12.76-(8.9+1.76)1.25×43+1
1
4
×27+125%×30
99×28
78×
3
79
2
3
+
4
5
)÷(
1
3
-
1
4
35×(1-
4
7
)÷
5
9
题型:解答题难度:中档来源:不详

答案

(1)12.76-(8.9+1.76),
=12.76-8.9-1.76,
=12.76-1.76-8.9,
=11-8.9,
=2.1;

(2)1.25×43+1class="stub"1
4
×27+125%×30,
=1.25×43+1.25×27+1.25×30,
=1.25×(43+27+30),
=1.25×100,
=125;

(3)99×28,
=(100-1)×28,
=100×28-1×28,
=2800-28,
=2772;

(4)78×class="stub"3
79

=(79-1)×class="stub"3
79

=79×class="stub"3
79
-1×class="stub"3
79

=3-class="stub"3
79

=2class="stub"76
79


(5)(class="stub"2
3
+class="stub"4
5
)÷(class="stub"1
3
-class="stub"1
4
),
=class="stub"22
15
÷class="stub"1
12

=class="stub"88
5


(6)35×(1-class="stub"4
7
)÷class="stub"5
9

=35×class="stub"3
7
÷class="stub"5
9

=15÷class="stub"5
9

=27.

更多内容推荐