题目内容
计算下列各题.
| 860-560÷8×7 | (5.9+1.65)÷2.5 | (
|
|
860-560÷8×7
=860-70×7,
=860-490,
=370;
(5.9+1.65)÷2.5
=7.55÷2.5,
=3.02;
(
+
)×20÷
=(
×20+
×20)÷
,
=(15+16)×
,
=31×
,
=21;
÷[(
+
)×
].
=
÷[
×
],
=
÷
,
=
.
=860-70×7,
=860-490,
=370;
(5.9+1.65)÷2.5
=7.55÷2.5,
=3.02;
(
| 3 |
| 4 |
| 4 |
| 5 |
| 31 |
| 21 |
=(
| 3 |
| 4 |
| 4 |
| 5 |
| 31 |
| 21 |
=(15+16)×
| 21 |
| 31 |
=31×
| 21 |
| 31 |
=21;
| 3 |
| 5 |
| 7 |
| 9 |
| 1 |
| 3 |
| 3 |
| 2 |
=
| 3 |
| 5 |
| 10 |
| 9 |
| 3 |
| 2 |
=
| 3 |
| 5 |
| 5 |
| 3 |
=
| 9 |
| 25 |
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