题目内容
能简算的要简算
(
+
)÷
÷
+
×8
42000÷125÷8
×[
-(
+
)].
(
| 3 |
| 4 |
| 5 |
| 16 |
| 1 |
| 36 |
| 5 |
| 7 |
| 1 |
| 8 |
| 2 |
| 7 |
42000÷125÷8
| 15 |
| 8 |
| 4 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
(1)(
+
)÷
=
×36,
=
;
(2)
÷
+
×8
=
×8+
×8,
=(
+
)×8,
=1×8,
=8;
(3)42000÷125÷8
=42000÷(125×8),
=42000÷1000,
=42;
(4)
×[
-(
+
)]
=
×[
-
],
=
×
,
=
.
| 3 |
| 4 |
| 5 |
| 16 |
| 1 |
| 36 |
=
| 17 |
| 16 |
=
| 153 |
| 4 |
(2)
| 5 |
| 7 |
| 1 |
| 8 |
| 2 |
| 7 |
=
| 5 |
| 7 |
| 2 |
| 7 |
=(
| 5 |
| 7 |
| 2 |
| 7 |
=1×8,
=8;
(3)42000÷125÷8
=42000÷(125×8),
=42000÷1000,
=42;
(4)
| 15 |
| 8 |
| 4 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
=
| 15 |
| 8 |
| 4 |
| 5 |
| 8 |
| 15 |
=
| 15 |
| 8 |
| 4 |
| 15 |
=
| 1 |
| 2 |
练习册系列答案
相关题目