题目内容
用你喜欢的方法计算. (1)42÷(
| (2)(
| ||||||||
(3)
| (4)
|
(1)42÷(
÷
)
=42÷
=33
;
(2)(
×
)×24
=
×24
=
;
(3)
×2.5×
×4
=(
×
)×(4×2.5)
=
×10
=5;
(4)
×24+24×
=(
+
)×24
=1×24
=24.
5 |
14 |
2 |
7 |
=42÷
5 |
4 |
=33
3 |
5 |
(2)(
1 |
6 |
3 |
8 |
=
1 |
16 |
=
3 |
2 |
(3)
11 |
20 |
10 |
11 |
=(
11 |
20 |
10 |
11 |
=
1 |
2 |
=5;
(4)
1 |
9 |
8 |
9 |
=(
1 |
9 |
8 |
9 |
=1×24
=24.
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