题目内容
用你喜欢的方法计算. 15÷
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(1)15÷
×
×8
=15×
×
×8
=27×
×8
=
×8
=36;
(2)
÷3+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)
×101-
÷
=
×101-
×2
=
×(101-2)
=
×99
=11;
(4)(
+
+
)×70
=
×70+
×70+
×70
=10+14+5
=29;
(5)
÷
+
×7
=
×7+
×7
=(
+
)×7
=1×7
=7;
(6)
×
÷
×
=
×
×
×
=(
×
)×(
×
)
=1×
=
.
5 |
9 |
1 |
6 |
=15×
9 |
5 |
1 |
6 |
=27×
1 |
6 |
=
9 |
2 |
=36;
(2)
5 |
6 |
1 |
6 |
1 |
3 |
=
5 |
6 |
1 |
3 |
1 |
6 |
1 |
3 |
=(
5 |
6 |
1 |
6 |
1 |
3 |
=1×
1 |
3 |
=
1 |
3 |
(3)
1 |
9 |
1 |
9 |
1 |
2 |
=
1 |
9 |
1 |
9 |
=
1 |
9 |
=
1 |
9 |
=11;
(4)(
1 |
7 |
1 |
5 |
1 |
14 |
=
1 |
7 |
1 |
5 |
1 |
14 |
=10+14+5
=29;
(5)
1 |
56 |
1 |
7 |
55 |
56 |
=
1 |
56 |
55 |
56 |
=(
1 |
56 |
55 |
56 |
=1×7
=7;
(6)
5 |
7 |
1 |
6 |
5 |
7 |
1 |
6 |
=
5 |
7 |
1 |
6 |
7 |
5 |
1 |
6 |
=(
5 |
7 |
7 |
5 |
1 |
6 |
1 |
6 |
=1×
1 |
36 |
=
1 |
36 |
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