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能简算的要简算.(512-14)÷56;136×0.5+64×50%;813÷7+17×713;0.2×613+15×913+1113×20%.
题目详情
能简算的要简算.
(
-
)÷
;
136×0.5+64×50%;
÷7+
×
;
0.2×
+
×
+
×20%.
(
5 |
12 |
1 |
4 |
5 |
6 |
136×0.5+64×50%;
8 |
13 |
1 |
7 |
7 |
13 |
0.2×
6 |
13 |
1 |
5 |
9 |
13 |
11 |
13 |
▼优质解答
答案和解析
(1)(
-
)÷
=
÷
=
;
(2)136×0.5+64×50%
=(136+64)×50%
=100×50%
=50;
(3)
÷7+
×
=
×(
+
)
=
×1
=
;
(4)0.2×
+
×
+
×20%
=0.2×(
+
+
)
=0.2×2
=0.4.
5 |
12 |
1 |
4 |
5 |
6 |
=
1 |
6 |
5 |
6 |
=
1 |
5 |
(2)136×0.5+64×50%
=(136+64)×50%
=100×50%
=50;
(3)
8 |
13 |
1 |
7 |
7 |
13 |
=
1 |
7 |
8 |
13 |
7 |
13 |
=
1 |
7 |
=
1 |
7 |
(4)0.2×
6 |
13 |
1 |
5 |
9 |
13 |
11 |
13 |
=0.2×(
6 |
13 |
9 |
13 |
11 |
13 |
=0.2×2
=0.4.
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