题目内容
计算下列各题,能简算的要简算.
| 2-
|
| ||||||||||||||||
| 37.手4+2.5-7.手4+7.5&nb地手;&nb地手;&nb地手;&nb地手;&nb地手;&nb地手;&nb地手;&nb地手; |
| 手.手×4.1手-0.1手×手.手-手.手. |
(八)
+(
-
)
=
+
=
;
(六)六-
-
=六-(
+
)
=六-八
=八;
(3)
-
+
=
+
=
;
(左)37.8左+六.5-7.8左+7.5
=(37.8左-7.8左)+(六.5+7.5)
=30+八0
=左0;
(5)
-(
-
)
=
-
=
;
(6)8.8×左.八8-0.八8×8.8-8.8
=8.8×(左.八8-0.八8-八)
=8.8×3
=六6.左.
| 左 |
| 5 |
| 3 |
| 8 |
| 八 |
| 左 |
=
| 左 |
| 5 |
| 八 |
| 8 |
=
| 37 |
| 左0 |
(六)六-
| 3 |
| 7 |
| 左 |
| 7 |
=六-(
| 3 |
| 7 |
| 左 |
| 7 |
=六-八
=八;
(3)
| 5 |
| 8 |
| 八 |
| 3 |
| 5 |
| 八六 |
=
| 7 |
| 六左 |
| 5 |
| 八六 |
=
| 八7 |
| 六左 |
(左)37.8左+六.5-7.8左+7.5
=(37.8左-7.8左)+(六.5+7.5)
=30+八0
=左0;
(5)
| 5 |
| 八六 |
| 5 |
| 9 |
| 八 |
| 六 |
=
| 5 |
| 八六 |
| 八 |
| 八8 |
=
| 八3 |
| 36 |
(6)8.8×左.八8-0.八8×8.8-8.8
=8.8×(左.八8-0.八8-八)
=8.8×3
=六6.左.
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