题目内容
计算.
①
-(
+
)÷
②(1.6×
+3.6÷
)×
③(1-
)×(1-
)×…×(1-
).
①
| 11 |
| 12 |
| 1 |
| 4 |
| 3 |
| 8 |
| 5 |
| 6 |
②(1.6×
| 5 |
| 8 |
| 3 |
| 4 |
| 4 |
| 29 |
③(1-
| 1 |
| 2×2 |
| 1 |
| 3×3 |
| 1 |
| 10×10 |
①
-(
+
)÷
,
=
-
÷
,
=
-
,
=
;
②(1.6×
+3.6÷
)×
,
=(1+4.8)×
,
=5.8×
,
=0.8;
③(1-
)×(1-
)×…×(1-
),
=(1+
)×(1-
)×(1+
)×(1-
)×…×(1+
)×(1-
),
=
×
×
×
×…×
×
,
=
×(
×
)×(
×
)×…×(
×
)×
,
=
×
,
=
.
| 11 |
| 12 |
| 1 |
| 4 |
| 3 |
| 8 |
| 5 |
| 6 |
=
| 11 |
| 12 |
| 5 |
| 8 |
| 5 |
| 6 |
=
| 11 |
| 12 |
| 3 |
| 4 |
=
| 1 |
| 6 |
②(1.6×
| 5 |
| 8 |
| 3 |
| 4 |
| 4 |
| 29 |
=(1+4.8)×
| 4 |
| 29 |
=5.8×
| 4 |
| 29 |
=0.8;
③(1-
| 1 |
| 2×2 |
| 1 |
| 3×3 |
| 1 |
| 10×10 |
=(1+
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 10 |
| 1 |
| 10 |
=
| 3 |
| 2 |
| 1 |
| 2 |
| 4 |
| 3 |
| 2 |
| 3 |
| 11 |
| 10 |
| 9 |
| 10 |
=
| 1 |
| 2 |
| 3 |
| 2 |
| 2 |
| 3 |
| 4 |
| 3 |
| 3 |
| 4 |
| 10 |
| 9 |
| 9 |
| 10 |
| 11 |
| 10 |
=
| 1 |
| 2 |
| 11 |
| 10 |
=
| 11 |
| 20 |
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