题目内容
| 计算下面各题(能简算的要简算) 10
|
7.25+3
|
4
| ||||||||||||||
9.05+5
|
10.9-1.6-3
|
10
|
(1)10
-(3.14+1
),
=10
-1
-3.14,
=9-3.14,
=5.86;
(2)7.25+3
+
,
=7.25+0.75+3
,
=8+3
,
=11
;
(3)4
+
+1
,
=
+
+
,
=
+
+
,
=
;
(4)9.05+5
-1
,
=9.05+5.25-1.8,
=14.3-1.8,
=12.5;
(5)10.9-1.6-3
,
=10.9-(1.6+3.4),
=10.9-5,
=5.9;
(6)10
+(1.625+1
-
),
=10
+1
+(1
-
),
=12
+1
,
=12
+1
,
=13
.
| 2 |
| 3 |
| 2 |
| 3 |
=10
| 2 |
| 3 |
| 2 |
| 3 |
=9-3.14,
=5.86;
(2)7.25+3
| 5 |
| 7 |
| 3 |
| 4 |
=7.25+0.75+3
| 5 |
| 7 |
=8+3
| 5 |
| 7 |
=11
| 5 |
| 7 |
(3)4
| 3 |
| 5 |
| 5 |
| 7 |
| 12 |
| 35 |
=
| 23 |
| 5 |
| 5 |
| 7 |
| 47 |
| 35 |
=
| 161 |
| 35 |
| 25 |
| 35 |
| 47 |
| 35 |
=
| 233 |
| 35 |
(4)9.05+5
| 1 |
| 4 |
| 4 |
| 5 |
=9.05+5.25-1.8,
=14.3-1.8,
=12.5;
(5)10.9-1.6-3
| 2 |
| 5 |
=10.9-(1.6+3.4),
=10.9-5,
=5.9;
(6)10
| 5 |
| 8 |
| 5 |
| 6 |
| 1 |
| 3 |
=10
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 6 |
| 2 |
| 6 |
=12
| 1 |
| 4 |
| 1 |
| 2 |
=12
| 1 |
| 4 |
| 2 |
| 4 |
=13
| 3 |
| 4 |
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