题目内容
计算,能简算的要简算.
(1)46.7-15.03-4.97
(2)709-4832÷16
(3)(
+
)÷4+
(4)
×[
+(
-
)].
(1)46.7-15.03-4.97
(2)709-4832÷16
(3)(
| 1 |
| 9 |
| 1 |
| 27 |
| 27 |
| 23 |
(4)
| 2 |
| 3 |
| 9 |
| 10 |
| 7 |
| 16 |
| 1 |
| 4 |
(1)46.7-15.03-4.97
=46.7-(15.03+4.97),
=46.7-20,
=26.7;
(2)709-4832÷16
=709-4832÷(8×2),
=709-4832÷8÷2,
=709-604÷2,
=709-302,
=407;
(3)(
+
)÷4+
=
÷4+
,
=
+
,
=1
;
(4)
×[
+(
-
)]
=
×[
+
],
=
×
+
×
,
=
+
,
=
.
=46.7-(15.03+4.97),
=46.7-20,
=26.7;
(2)709-4832÷16
=709-4832÷(8×2),
=709-4832÷8÷2,
=709-604÷2,
=709-302,
=407;
(3)(
| 1 |
| 9 |
| 1 |
| 27 |
| 27 |
| 23 |
=
| 4 |
| 27 |
| 27 |
| 23 |
=
| 1 |
| 27 |
| 27 |
| 23 |
=1
| 131 |
| 621 |
(4)
| 2 |
| 3 |
| 9 |
| 10 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 2 |
| 3 |
| 9 |
| 10 |
| 3 |
| 16 |
=
| 2 |
| 3 |
| 9 |
| 10 |
| 2 |
| 3 |
| 3 |
| 16 |
=
| 3 |
| 5 |
| 1 |
| 8 |
=
| 29 |
| 40 |
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