题目内容
| 0.25×7.6+2.4×0.25 | (
| 15÷[(
| ||||||||||||||||||||||
13
|
| 13
|
(1)0.25×7.6+2.4×0.25,
=0.25×(7.6+2.4),
=0.25×10,
=2.5;
(2)(
-
-
)×24,
=
×24-
×24-
×24,
=18-12-4,
=6-4,
=2;
(3)15÷[(
+
)×
],
=15÷[
×
],
=15÷
,
=225;
(4)13
-3
-2
+2
,
=(13
+2
)-(3
+2
),
=16-6,
=10;
(5)
×2
+2
÷1
,
=
+
,
=
;
(6)13
×
+6
÷16,
=13
×
+6
×
,
=(13
+6
)×
,
=20×
,
=
.
=0.25×(7.6+2.4),
=0.25×10,
=2.5;
(2)(
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 6 |
=
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 6 |
=18-12-4,
=6-4,
=2;
(3)15÷[(
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
=15÷[
| 13 |
| 15 |
| 1 |
| 13 |
=15÷
| 1 |
| 15 |
=225;
(4)13
| 5 |
| 11 |
| 4 |
| 7 |
| 3 |
| 7 |
| 6 |
| 11 |
=(13
| 5 |
| 11 |
| 6 |
| 11 |
| 4 |
| 7 |
| 3 |
| 7 |
=16-6,
=10;
(5)
| 5 |
| 8 |
| 2 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
=
| 5 |
| 3 |
| 7 |
| 4 |
=
| 41 |
| 12 |
(6)13
| 7 |
| 8 |
| 1 |
| 16 |
| 1 |
| 8 |
=13
| 7 |
| 8 |
| 1 |
| 16 |
| 1 |
| 8 |
| 1 |
| 16 |
=(13
| 7 |
| 8 |
| 1 |
| 8 |
| 1 |
| 16 |
=20×
| 1 |
| 16 |
=
| 5 |
| 4 |
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