问题
解答题
|
答案
(1)4
÷12 7
=11 14
÷30 7
=25 14
×30 7
=14 25
;12 5
(2)①16÷1
=16÷3 5
=16×8 5
=10;5 8
②
÷13 10
=4 5
÷3 10
=9 5
×3 10
=5 9
;1 6
③4
÷5=2 7
÷5=30 7
×30 7
=1 5
;6 7
④
÷15 7
=1 14
÷5 7
=15 14
×5 7
=14 15
;2 3
⑤2
÷11 10
=2 3
÷21 10
=5 3
×21 10
=3 5
;63 50
⑥6
÷3 5
=3 5
÷33 5
=3 5
×33 5
=11;5 3
⑦1
×31 5
=3 4
×6 5
=15 4
;9 2
⑧2
-1 3
=3 5
-7 3
=3 5
-35 15
=9 15
.26 15
故答案为:
×30 7
,14 25
;假分数,相除.12 5