题目内容
列式计算.
(1)
与
的和乘
的倒数,积是多少?
(2)5与它的倒数的积减去
,差是多少?
(1)
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 15 |
(2)5与它的倒数的积减去
| 4 |
| 7 |
(1)(
+
)×(1÷
),
=(
+
)×15,
=
×15,
=8;
答:积是8.
(2)5×
-
,
=1-
,
=
;
答:差是
.
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 15 |
=(
| 1 |
| 5 |
| 1 |
| 3 |
=
| 8 |
| 15 |
=8;
答:积是8.
(2)5×
| 1 |
| 5 |
| 4 |
| 7 |
=1-
| 4 |
| 7 |
=
| 3 |
| 7 |
答:差是
| 3 |
| 7 |
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