题目内容
计算:
(1)
(2)
(m>0)
(3)-
(4)(-7
)2
(5)
×(-9
)
(6)
-
+
(7)4
+
-
+4
(8)
+12x
-x2
(9)
×
÷
(10)(4+
)(4-
)
(11)(
+1)2-2
(12)(
+
)(2
-2
)
(13)(5
-6
+4
)÷
(14)
+
-(
-1)0.
(1)
| (-144)×(-169) |
(2)
| 18m2n |
(3)-
| 1 |
| 3 |
| 225 |
(4)(-7
|
(5)
| 2 |
| 3 |
3
|
| 45 |
(6)
| 18 |
| 2 | ||
|
| 3 |
(7)4
| 5 |
| 45 |
| 8 |
| 2 |
(8)
| 2x |
| 3 |
| 18x |
|
|
(9)
| 27 |
| 32 |
| 6 |
(10)(4+
| 3 |
| 3 |
(11)(
| 3 |
| 3 |
(12)(
| 3 |
| 5 |
| 3 |
| 5 |
(13)(5
| 48 |
| 27 |
| 15 |
| 3 |
(14)
| 2 | ||
|
| 27 |
| 3 |
(1)原式=
=
×
=12×13=156.
(2)原式=3m
.
(3)原式=-
×15=-5.
(4)原式=49×
=
.
(5)原式=
×
×(-27
)=-
×
×27
=-45
.
(6)原式=3
-
+
=2
+
.
(7)原式=4
+3
-2
+4
=7
+2
.
(8)原式=
•3
+12x•
-x2•
=2x
+3x
-x
=4x
.
(9)原式=3
×4
÷
=12.
(10)原式=42-(
)2=16-3=13.
(11)原式=4+2
-2
=4.
(12)原式=(
+
)×2(
-
)=2(3-5)=-4.
(13)原式=(20
-18
+4
)÷
=20-18+4
=2+4
.
(14)原式=
+1+3
-1=4
.
| 144×169 |
| 144 |
| 169 |
(2)原式=3m
| 2n |
(3)原式=-
| 1 |
| 3 |
(4)原式=49×
| 3 |
| 14 |
| 21 |
| 2 |
(5)原式=
| 2 |
| 3 |
|
| 5 |
| 2 |
| 3 |
| ||
| 2 |
| 5 |
| 5 |
(6)原式=3
| 2 |
| 2 |
| 3 |
| 2 |
| 3 |
(7)原式=4
| 5 |
| 5 |
| 2 |
| 2 |
| 5 |
| 2 |
(8)原式=
| 2x |
| 3 |
| 2x |
| ||
| 4 |
| ||
| x |
| 2x |
| 2x |
| 2x |
| 2x |
(9)原式=3
| 3 |
| 2 |
| 6 |
(10)原式=42-(
| 3 |
(11)原式=4+2
| 3 |
| 3 |
(12)原式=(
| 3 |
| 5 |
| 3 |
| 5 |
(13)原式=(20
| 3 |
| 3 |
| 15 |
| 3 |
| 5 |
| 5 |
(14)原式=
| 3 |
| 3 |
| 3 |
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