题目内容
| 脱式计算.(能简便的用简便方法计算) 12.53-1.35×2-9.3 |
0.8÷(4-3.75)÷0.1 |
| ||||||||||||||||
7-(
|
|
10-
|
(1)12.53-1.35×2-9.3,
=12.53-2.7-9.3,
=12.53-(2.7+9.3),
=12.53-12,
=0.53;
(2)0.8÷(4-3.75)÷0.1,
=0.8÷0.25÷0.1,
=3.2÷0.1,
=32;
(3)
+
+
,
=
+
+
,
=
;
(4)7-(
-
),
=7-
,
=6
;
(5)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(6)10-
-
,
=10-(
+
),
=10-1,
=9.
=12.53-2.7-9.3,
=12.53-(2.7+9.3),
=12.53-12,
=0.53;
(2)0.8÷(4-3.75)÷0.1,
=0.8÷0.25÷0.1,
=3.2÷0.1,
=32;
(3)
| 4 |
| 5 |
| 11 |
| 15 |
| 3 |
| 10 |
=
| 24 |
| 30 |
| 22 |
| 30 |
| 9 |
| 30 |
=
| 11 |
| 6 |
(4)7-(
| 3 |
| 4 |
| 2 |
| 5 |
=7-
| 7 |
| 20 |
=6
| 13 |
| 20 |
(5)
| 11 |
| 12 |
| 5 |
| 8 |
| 3 |
| 8 |
| 1 |
| 12 |
=(
| 11 |
| 12 |
| 1 |
| 12 |
| 5 |
| 8 |
| 3 |
| 8 |
=1+1,
=2;
(6)10-
| 6 |
| 7 |
| 1 |
| 7 |
=10-(
| 6 |
| 7 |
| 1 |
| 7 |
=10-1,
=9.
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