题目内容
计算
(1)8.01+99×8.01
(2)125×(8+0.8+0.08+0.008)
(3)
+
+
+
+
(4)(0.4+
)÷(
-0.75)×0.5
(5)989898×999999÷10101÷111111.
(1)8.01+99×8.01
(2)125×(8+0.8+0.08+0.008)
(3)
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
(4)(0.4+
| 2 |
| 3 |
| 5 |
| 6 |
(5)989898×999999÷10101÷111111.
(1)8.01+99×8.01,
=(1+99)×8.01,
=100×8.01,
=801;
(2)125×(8+0.8+0.08+0.008),
=125×8+125×0.8+125×0.08+125×0.008,
=1000+100+10+1,
=1111;
(3)
+
+
+
+
,
=1-
+
-
+
-
+
-
+
-
,
=1-
,
=
;
(4)(0.4+
)÷(
-0.75)×0.5,
=(
+
)÷(
-
)×0.5,
=
÷
×
,
=
×12×
,
=
;
(5)989898×999999÷10101÷111111,
=(98×10101)×(9×111111)÷10101÷111111,
=(98×10101÷10101)×(9×111111÷111111),
=98×9,
=(100-2)×9,
=900-18,
=882.
=(1+99)×8.01,
=100×8.01,
=801;
(2)125×(8+0.8+0.08+0.008),
=125×8+125×0.8+125×0.08+125×0.008,
=1000+100+10+1,
=1111;
(3)
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
=1-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 16 |
| 1 |
| 32 |
=1-
| 1 |
| 32 |
=
| 31 |
| 32 |
(4)(0.4+
| 2 |
| 3 |
| 5 |
| 6 |
=(
| 2 |
| 5 |
| 2 |
| 3 |
| 5 |
| 6 |
| 3 |
| 4 |
=
| 16 |
| 15 |
| 1 |
| 12 |
| 1 |
| 2 |
=
| 16 |
| 15 |
| 1 |
| 2 |
=
| 32 |
| 5 |
(5)989898×999999÷10101÷111111,
=(98×10101)×(9×111111)÷10101÷111111,
=(98×10101÷10101)×(9×111111÷111111),
=98×9,
=(100-2)×9,
=900-18,
=882.
练习册系列答案
相关题目