问题
解答题
|
答案
①
= = = | ||||||||||||||||||||||||
② = = = = |
| 3 |
| 7 |
| 7 |
| 11 |
| 4 |
| 7 |
| 7 |
| 11 |
=
×3 7
+11 7
×4 7 11 7
=
×（11 7
+3 7
）4 7
=
×111 7
=1
；4 7
④
×16 5
÷1 2 2 5
=
×16 2
×1 2 5 2
=10；
⑤
÷（12 7
-2 3
）1 4
=
÷（12 7
-8 12
）3 12
=
÷12 7 5 12
=
×12 7 12 5
=144 35
=4
；4 35
⑥36×（
+7 9
）÷5 6 29 5
=36×（
+14 18
）×15 18 5 29
=36×
×29 18 5 29
=10．