题目内容
直接写得数.
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0÷
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分析:①分子相乘的积做分子,分母相乘的积做分母;②分子与整数相乘的积做分子,分母不变;③0除以任何数都得0;④⑧⑨⑩把除法改为乘法计算;⑤⑥⑦约分计算.
解答:解:
×
=
;
×3=
; 0÷
=0;
÷
=2;
×
=
;
×39=12;
×
=
;
÷
=
;
÷
=1;
÷3=
.
故答案为:
,
,0,2,
,12,
,
,1,
.
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
| 4 |
| 14 |
| 6 |
| 7 |
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
| 5 |
| 1 |
| 6 |
| 1 |
| 15 |
| 4 |
| 13 |
| 7 |
| 8 |
| 3 |
| 14 |
| 3 |
| 16 |
| 3 |
| 5 |
| 1 |
| 6 |
| 18 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 6 |
| 7 |
| 2 |
| 7 |
故答案为:
| 1 |
| 6 |
| 6 |
| 7 |
| 1 |
| 15 |
| 3 |
| 16 |
| 18 |
| 5 |
| 2 |
| 7 |
点评:此题考查了分数的乘法和除法以及0的特殊作用,根据题目特点,灵活解答.
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