15道分数乘法: 1×8= 1×9= 49×7= 9 ×8= 3×29= 59×7= 1×9= 23×2= 76×18= 879×39= 15×1= 56×18= 29×38= 1×3= 12×26= 15道分数除法: 1÷4/5= 7/10÷1= 1/9÷5= 1/2÷2/3= 3/8÷5/8 = 9÷3/4 = 2/7÷2/7 = 6÷1/6= 3/5÷1/3= 1/3÷1/4= 2/5÷5= 5/12÷1/3= 1÷10/11= 5/12÷1/8 = 9/10÷3/4= 答案补充 1. 3/7 × 49/9 2. 8/9 × 15/36 3. 12× 5/6 4. 2/9 ×3 5. 8× 5/4 9 ×8= 3×29= 59×7= 1×9= 23×2= 76×18= 879×39= 15×1= 56×18= 29×38=
