题目内容
计算:(能简算的要简算)
3.6×[2÷6×[2÷(
-0.6)]
×80×2
×1.25
(
-
÷4×
)÷
18
×
+2
×
-
.
3.6×[2÷6×[2÷(
| 4 |
| 5 |
| 8 |
| 13 |
| 2 |
| 25 |
(
| 1 |
| 8 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
18
| 3 |
| 5 |
| 19 |
| 20 |
| 2 |
| 5 |
| 19 |
| 20 |
| 19 |
| 20 |
(1)3.6×[2÷6×2÷(
-0.6)],
=3.6×[2÷6×2÷0.2],
=3.6×(
×2÷0.2),
=3.6×(
÷0.2),
=3.6×
,
=12;
(2)
×80×2
×1.25,
=(
×
)×(80×1.25),
=
×100,
=128;
(3)(
-
÷4×
)÷
,
=(
-
×
)÷
,
=(
-
)÷
,
=
×2,
=
;
(4)18
×
+2
×
-
,
=(18
+2
-1)×
,
=20×
,
=19.
| 4 |
| 5 |
=3.6×[2÷6×2÷0.2],
=3.6×(
| 1 |
| 3 |
=3.6×(
| 2 |
| 3 |
=3.6×
| 10 |
| 3 |
=12;
(2)
| 8 |
| 13 |
| 2 |
| 25 |
=(
| 8 |
| 13 |
| 52 |
| 25 |
=
| 32 |
| 25 |
=128;
(3)(
| 1 |
| 8 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
=(
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 4 |
| 1 |
| 2 |
=(
| 1 |
| 8 |
| 1 |
| 64 |
| 1 |
| 2 |
=
| 7 |
| 64 |
=
| 7 |
| 32 |
(4)18
| 3 |
| 5 |
| 19 |
| 20 |
| 2 |
| 5 |
| 19 |
| 20 |
| 19 |
| 20 |
=(18
| 3 |
| 5 |
| 2 |
| 5 |
| 19 |
| 20 |
=20×
| 19 |
| 20 |
=19.
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