题目内容
| 脱式计算. 4+
| x-
| 50%x-33%x=510 | ||||||||||||||||||
|
|
|
(1)4+
x=102,
4+
x-4=102-4,
x×
=98×
,
x=140;
(2)x-
x=
,
x=
,
x×
=
×
,
x=
;
(3)50%x-33%x=510,
0.17x=510,
0.17x÷0.17=510÷0.17,
x=3000;
(4)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=
×
,
=
,
(5)
×5÷
÷5,
=
×5×
×
,
=1;
(6)
÷5+
×
,
=
×
+
×
,
=
×(
+
),
=
×1,
=
.
| 7 |
| 10 |
4+
| 7 |
| 10 |
| 7 |
| 10 |
| 10 |
| 7 |
| 10 |
| 7 |
x=140;
(2)x-
| 1 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 8 |
| 4 |
| 3 |
x=
| 1 |
| 2 |
(3)50%x-33%x=510,
0.17x=510,
0.17x÷0.17=510÷0.17,
x=3000;
(4)
| 4 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 3 |
| 4 |
=
| 2 |
| 5 |
| 4 |
| 3 |
| 1 |
| 5 |
| 4 |
| 3 |
=(
| 2 |
| 5 |
| 1 |
| 5 |
| 4 |
| 3 |
=
| 3 |
| 5 |
| 4 |
| 3 |
=
| 4 |
| 5 |
(5)
| 5 |
| 6 |
| 5 |
| 6 |
=
| 5 |
| 6 |
| 6 |
| 5 |
| 1 |
| 5 |
=1;
(6)
| 2 |
| 9 |
| 1 |
| 5 |
| 7 |
| 9 |
=
| 2 |
| 9 |
| 1 |
| 5 |
| 1 |
| 5 |
| 7 |
| 9 |
=
| 1 |
| 5 |
| 2 |
| 9 |
| 7 |
| 9 |
=
| 1 |
| 5 |
=
| 1 |
| 5 |
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