题目内容
3×(
| [
| ||||||||||||||
4.5×3.7+4
|
| ||||||||||||||
| 4
|
(1)3×(
+
)-
,
=3×
+3×
-
,
=
+
-
,
=
-
+
,
=0+
,
=
;
(2)[
-(
-
)]÷
,
=[
-
]÷
,
=
÷
,
=
;
(3)4.5×3.7+4
×1.3,
=4.5×(3.7+1.3),
=4.5×5,
=22.5;
(4)
÷[2
-(
+
)],
=
÷[2
-
-
],
=
÷[2
-
],
=
÷
,
=
;
(5)
×
-
÷
,
=
×
-
×
,
=
×(
-
),
=
×
,
=
;
(6)4
×170%+6.3×4
-2.5,
=4
×(1.7+6.3)-2.5,
=4
×8-2.5,
=35.2-2.5,
=32.7.
| 2 |
| 15 |
| 1 |
| 12 |
| 2 |
| 5 |
=3×
| 2 |
| 15 |
| 1 |
| 12 |
| 2 |
| 5 |
=
| 2 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
=
| 2 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
=0+
| 1 |
| 4 |
=
| 1 |
| 4 |
(2)[
| 1 |
| 2 |
| 3 |
| 4 |
| 3 |
| 5 |
| 7 |
| 10 |
=[
| 1 |
| 2 |
| 3 |
| 20 |
| 7 |
| 10 |
=
| 7 |
| 20 |
| 7 |
| 10 |
=
| 1 |
| 2 |
(3)4.5×3.7+4
| 1 |
| 2 |
=4.5×(3.7+1.3),
=4.5×5,
=22.5;
(4)
| 4 |
| 9 |
| 2 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
=
| 4 |
| 9 |
| 2 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
=
| 4 |
| 9 |
| 1 |
| 5 |
| 1 |
| 3 |
=
| 4 |
| 9 |
| 26 |
| 15 |
=
| 10 |
| 39 |
(5)
| 3 |
| 4 |
| 9 |
| 5 |
| 3 |
| 4 |
| 10 |
| 13 |
=
| 3 |
| 4 |
| 9 |
| 5 |
| 3 |
| 4 |
| 13 |
| 10 |
=
| 3 |
| 4 |
| 9 |
| 5 |
| 13 |
| 10 |
=
| 3 |
| 4 |
| 1 |
| 2 |
=
| 3 |
| 8 |
(6)4
| 2 |
| 5 |
| 2 |
| 5 |
=4
| 2 |
| 5 |
=4
| 2 |
| 5 |
=35.2-2.5,
=32.7.
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