题目内容
计算下面各题,能简算的要简算.
(
-
)-(
+
)
×[8.6÷(3.7+
)]
(
×
+
×
)÷
2×(0.25+
)÷
-
.
(
| 19 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
| 7 |
| 12 |
| 5 |
| 16 |
| 3 |
| 5 |
(
| 3 |
| 4 |
| 1 |
| 8 |
| 3 |
| 4 |
| 7 |
| 8 |
| 1 |
| 3 |
2×(0.25+
| 3 |
| 4 |
| 2 |
| 3 |
| 2 |
| 5 |
(1)(
-
)-(
+
),
=
-
-
-
,
=
-
-
-
,
=(
-
)-(
+
),
=1-1,
=0;
(2)
×[8.6÷(3.7+
)],
=
×[8.6÷4.3],
=
×2,
=
;
(3)(
×
+
×
)÷
,
=[
×(
+
)]÷
,
=[
×1]÷
,
=
×3,
=
;
(4)2×(0.25+
)÷
-
,
=2×1÷
-
,
=2÷
-
,
=3-
,
=2
.
| 19 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
| 7 |
| 12 |
=
| 19 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
| 7 |
| 12 |
=
| 19 |
| 12 |
| 7 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
=(
| 19 |
| 12 |
| 7 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
=1-1,
=0;
(2)
| 5 |
| 16 |
| 3 |
| 5 |
=
| 5 |
| 16 |
=
| 5 |
| 16 |
=
| 5 |
| 8 |
(3)(
| 3 |
| 4 |
| 1 |
| 8 |
| 3 |
| 4 |
| 7 |
| 8 |
| 1 |
| 3 |
=[
| 3 |
| 4 |
| 1 |
| 8 |
| 7 |
| 8 |
| 1 |
| 3 |
=[
| 3 |
| 4 |
| 1 |
| 3 |
=
| 3 |
| 4 |
=
| 9 |
| 4 |
(4)2×(0.25+
| 3 |
| 4 |
| 2 |
| 3 |
| 2 |
| 5 |
=2×1÷
| 2 |
| 3 |
| 2 |
| 5 |
=2÷
| 2 |
| 3 |
| 2 |
| 5 |
=3-
| 2 |
| 5 |
=2
| 3 |
| 5 |
练习册系列答案
相关题目