题目内容
计算(能简便的要简便)
27.5+21÷14×7
234×99-766
×
-
×
(0.4+
)÷
+
[6+
×(
-
)]×
.
27.5+21÷14×7
234×99-766
| 4 |
| 3 |
| 8 |
| 5 |
| 3 |
| 5 |
| 4 |
| 3 |
(0.4+
| 1 |
| 3 |
| 22 |
| 5 |
| 3 |
| 4 |
[6+
| 1 |
| 2 |
| 5 |
| 12 |
| 3 |
| 8 |
| 5 |
| 3 |
(1)27.5+21÷14×7,
=27.5+10.5,
=38;
(2)234×99-766,
=234×100-(234+766),
=23400-1000,
=22400;
(3)
×
-
×
,
=(
-
)×
,
=1×
,
=
;
(4)(0.4+
)÷
+
,
=(
+
)÷
+
,
=
×
+
,
=
+
,
=
;
(5)[6+
×(
-
)]×
,
=[6+
×
]×
,
=
×
,
=
.
=27.5+10.5,
=38;
(2)234×99-766,
=234×100-(234+766),
=23400-1000,
=22400;
(3)
| 4 |
| 3 |
| 8 |
| 5 |
| 3 |
| 5 |
| 4 |
| 3 |
=(
| 8 |
| 5 |
| 3 |
| 5 |
| 4 |
| 3 |
=1×
| 4 |
| 3 |
=
| 4 |
| 3 |
(4)(0.4+
| 1 |
| 3 |
| 22 |
| 5 |
| 3 |
| 4 |
=(
| 2 |
| 5 |
| 1 |
| 3 |
| 22 |
| 5 |
| 3 |
| 4 |
=
| 11 |
| 15 |
| 5 |
| 22 |
| 3 |
| 4 |
=
| 1 |
| 6 |
| 3 |
| 4 |
=
| 11 |
| 12 |
(5)[6+
| 1 |
| 2 |
| 5 |
| 12 |
| 3 |
| 8 |
| 5 |
| 3 |
=[6+
| 1 |
| 2 |
| 1 |
| 24 |
| 5 |
| 3 |
=
| 289 |
| 48 |
| 5 |
| 3 |
=
| 1445 |
| 144 |
练习册系列答案
相关题目