问题
解答题
能简便的用简便方法计算．
|
答案
①
÷10 13
×35 26 7 3
=
×10 13
×26 35 7 3
=
；4 3
②
÷（5 8
+3 4
）1 2
=
÷5 8 5 4
=
×5 8 4 5
=
；1 2
③
×1 5
+4 7
÷53 7
=
×1 5
+4 7
×3 7 1 5
=
×（1 5
+4 7
）3 7
=
×11 5
=
；1 5
④1-
÷7 9 7 8
=1-
×7 9 8 7
=1-8 9
=
；1 9
⑤
-5 4
÷1 3
-5 9 2 5
=
-5 4
×1 3
-9 5 2 5
=
-5 4
-3 5 2 5
=
-（5 4
+3 5
）2 5
=
-15 4
=
；1 4
⑥（
+7 8
）÷13 16 13 16
=（
+7 8
）×13 16 16 13
=
×7 8
+16 13
×13 16 16 13
=
+114 13
=2
．1 13