题目内容
(1)
×5.3+0.125×5.7-1÷8
(2)(8.8-3
-2
)×1
(3)46×
.
1 |
8 |
(2)(8.8-3
5 |
11 |
6 |
11 |
9 |
14 |
(3)46×
17 |
45 |
(1)
1 |
8 |
=0.125×5.3+0.125×5.7-0.125,
=0.125×(5.3+5.7-1),
=0.125×10,
=1.25;
(2)(8.8-3
5 |
11 |
6 |
11 |
9 |
14 |
=[8.8-(3
5 |
11 |
6 |
11 |
9 |
14 |
=[8.8-6]×1
9 |
14 |
=2.8×1
9 |
14 |
=4.6;
(3)46×
17 |
45 |
=(45+1)×
17 |
45 |
=45×
17 |
45 |
17 |
45 |
=17+
17 |
45 |
=17
17 |
45 |
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