题目内容
脱式计算:
(1)(
+
-
)×24
(2)(
+
+
)÷
(3)(
-
)×(
÷
)
(4)
÷[
-(
-
)].
(1)(
| 3 |
| 4 |
| 5 |
| 6 |
| 2 |
| 3 |
(2)(
| 5 |
| 6 |
| 7 |
| 12 |
| 3 |
| 8 |
| 1 |
| 48 |
(3)(
| 1 |
| 3 |
| 1 |
| 6 |
| 5 |
| 8 |
| 1 |
| 6 |
(4)
| 4 |
| 9 |
| 4 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
(1)(
+
-
)×24
=
×24+
×24-
×24,
=18+20-16,
=22;
(2)(
+
+
)÷
=(
+
+
)×48,
=
×48+
×48+
×48,
=40+28+18,
=86;
(3)(
-
)×(
÷
)
=(
-
)×(
×6),
=
×
,
=
;
(4)
÷[
-(
-
)]
=
÷[
-(
-
)],
=
÷[
-
],
=
÷[
-
],
=
×
,
=
.
| 3 |
| 4 |
| 5 |
| 6 |
| 2 |
| 3 |
=
| 3 |
| 4 |
| 5 |
| 6 |
| 2 |
| 3 |
=18+20-16,
=22;
(2)(
| 5 |
| 6 |
| 7 |
| 12 |
| 3 |
| 8 |
| 1 |
| 48 |
=(
| 5 |
| 6 |
| 7 |
| 12 |
| 3 |
| 8 |
=
| 5 |
| 6 |
| 7 |
| 12 |
| 3 |
| 8 |
=40+28+18,
=86;
(3)(
| 1 |
| 3 |
| 1 |
| 6 |
| 5 |
| 8 |
| 1 |
| 6 |
=(
| 2 |
| 6 |
| 1 |
| 6 |
| 5 |
| 8 |
=
| 1 |
| 6 |
| 15 |
| 4 |
=
| 5 |
| 8 |
(4)
| 4 |
| 9 |
| 4 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
=
| 4 |
| 9 |
| 4 |
| 5 |
| 5 |
| 15 |
| 3 |
| 15 |
=
| 4 |
| 9 |
| 4 |
| 5 |
| 2 |
| 15 |
=
| 4 |
| 9 |
| 12 |
| 15 |
| 2 |
| 15 |
=
| 4 |
| 9 |
| 3 |
| 2 |
=
| 2 |
| 3 |
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