1.15÷五分之三=15×三分之五=9 9×十二分之五=四分之十五 答案:四分之十五
2.312+78=490 490÷五分之一=490×5=2360 答案:2360
3.11×四分之三=四分之三十三=八又四分之一 9-八又四分之一=四分之三(千克) 答案:四分之三千克.````````````````````````````.``````````````.````````````.希望能被选中!
1.15÷五分之三=15×三分之五=9 9×十二分之五=四分之十五 答案:四分之十五
2.312+78=490 490÷五分之一=490×5=2360 答案:2360
3.11×四分之三=四分之三十三=八又四分之一 9-八又四分之一=四分之三(千克) 答案:四分之三千克.````````````````````````````.``````````````.````````````.希望能被选中!