题目内容
计算下面各题,能简算的要简算.
48×(
+
-
)1.25×3.2×0.257-7×
+
35×(1-
)÷
÷19+
×
+
×
.
48×(
| 5 |
| 6 |
| 5 |
| 8 |
| 5 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
35×(1-
| 3 |
| 7 |
| 5 |
| 12 |
| 8 |
| 17 |
| 1 |
| 19 |
| 9 |
| 17 |
| 2 |
| 3 |
| 1 |
| 3 |
| 3 |
| 4 |
(1)48×(
+
-
),
=48×
+48×
-48×
,
=40+30-20,
=50;
(2)1.25×3.2×0.25,
=1.25×0.8×(4×0.25),
=1×1,
=1;
(3)7-7×
+
,
=7-3+
,
=4+
,
=4
;
(4)35×(1-
)÷
,
=35×
×
,
=48;
(5)
÷19+
×
,
=
+
×
,
=(
+
)×
,
=
;
(6)
+
×
,
=
+
,
=
.
| 5 |
| 6 |
| 5 |
| 8 |
| 5 |
| 12 |
=48×
| 5 |
| 6 |
| 5 |
| 8 |
| 5 |
| 12 |
=40+30-20,
=50;
(2)1.25×3.2×0.25,
=1.25×0.8×(4×0.25),
=1×1,
=1;
(3)7-7×
| 3 |
| 7 |
| 4 |
| 7 |
=7-3+
| 4 |
| 7 |
=4+
| 4 |
| 7 |
=4
| 4 |
| 7 |
(4)35×(1-
| 3 |
| 7 |
| 5 |
| 12 |
=35×
| 4 |
| 7 |
| 12 |
| 5 |
=48;
(5)
| 8 |
| 17 |
| 1 |
| 19 |
| 9 |
| 17 |
=
| 8 |
| 17 |
| 1 |
| 19 |
| 1 |
| 19 |
| 9 |
| 17 |
=(
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 19 |
=
| 1 |
| 19 |
(6)
| 2 |
| 3 |
| 1 |
| 3 |
| 3 |
| 4 |
=
| 2 |
| 3 |
| 1 |
| 4 |
=
| 11 |
| 12 |
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