计算(1)8.01+99×8.01(2)125×(8+0.8+0.08+0.008)(3)12+14+18+116+132(4)(0.4+23)÷(56-0.75)×0.5(5)989898×9999

题目简介

计算(1)8.01+99×8.01(2)125×(8+0.8+0.08+0.008)(3)12+14+18+116+132(4)(0.4+23)÷(56-0.75)×0.5(5)989898×9999

题目详情

计算
(1)8.01+99×8.01
(2)125×(8+0.8+0.08+0.008)
(3)
1
2
+
1
4
+
1
8
+
1
16
+
1
32

(4)(0.4+
2
3
)÷(
5
6
-0.75)×0.5
(5)989898×999999÷10101÷111111.
题型:解答题难度:中档来源:不详

答案

(1)8.01+99×8.01,
=(1+99)×8.01,
=100×8.01,
=801;

(2)125×(8+0.8+0.08+0.008),
=125×8+125×0.8+125×0.08+125×0.008,
=1000+100+10+1,
=1111;

(3)class="stub"1
2
+class="stub"1
4
+class="stub"1
8
+class="stub"1
16
+class="stub"1
32

=1-class="stub"1
2
+class="stub"1
2
-class="stub"1
4
+class="stub"1
4
-class="stub"1
8
+class="stub"1
8
-class="stub"1
16
+class="stub"1
16
-class="stub"1
32

=1-class="stub"1
32

=class="stub"31
32


(4)(0.4+class="stub"2
3
)÷(class="stub"5
6
-0.75)×0.5,
=(class="stub"2
5
+class="stub"2
3
)÷(class="stub"5
6
-class="stub"3
4
)×0.5,
=class="stub"16
15
÷class="stub"1
12
×class="stub"1
2

=class="stub"16
15
×12×class="stub"1
2

=class="stub"32
5


(5)989898×999999÷10101÷111111,
=(98×10101)×(9×111111)÷10101÷111111,
=(98×10101÷10101)×(9×111111÷111111),
=98×9,
=(100-2)×9,
=900-18,
=882.

更多内容推荐