20道分数口算题（带答案），急用谢谢。

Question

如题所述

Answer 1

4/9×3= 5÷1/3 = 1/2÷1/3 = 2/7×3/9 ÷2/7 = 21/25÷42= 4/5×3/4 = 8.7×0.2= 4×0.25= 1/7×14= 2/3÷5/6= 1.25×8= 3/5÷5/8= 6/7×3/2= 6×8.8= 4/11÷4= 4/9×3/8= 5/3÷5= 0÷8/3= 4/7 －2/3= 2/7×2 ＝ 41/12×4= 4÷3/16= 12÷9/4 = 75/8 ÷5= 12×16/9 ＝ 2/3×3＝ 8÷9/4 ＝ 5/3÷3/5 ＝ 4/5×5/8 ＝ 7/9×9/7 ＝ 2.64＋3.6= 2.4×50= 3500÷70= 2050－298= 2＋7÷9= 0.3÷3%= 81.2－11÷7－×3= 6696÷62－6.5×10.6 =
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2

Answer 2

(1)5\6*5=6 (2)5\4*2=5/8 (3)2\1*4=2 (4) 4\5*2=2/5 (5)3\1*5=3/5
(6)7\2*6=7/12 (7)5\2*6=5/12 (8)3\5*2=3/10 (9)5\7*2=5/14 (10)5\6*1=5/6
(11)7\9*2=7/18 (12)5\4*2=5/8 (13)2\45*0=0 (14)5\6-5\4=5\2 (15)2\1+2\1=1
(16)4\5-4\5=0 (18)3\2-3\1=3\1 (19)5+4\1=5 (20)4\1 5\1+5\1=5\2本回答被提问者采纳