12：710=57571.25：0.25=56-16=232316×13÷58=44544565×0.2=9.8-0.98=1-0.1×0.1=0.13×7=0.7+3=1.2×0.8=0.9×7=6.3

Question

(1)/(2)：(7)/(10)= (5)/(7) (5)/(7)	1.25：0.25=______	(5)/(6)-(1)/(6)= (2)/(3) (2)/(3)
(1)/(6)×(1)/(3)÷(5)/(8)= (4)/(45) (4)/(45)	65×0.2=______	9.8-0.98=______
1-0.1×0.1=______	0.13×7=______	0.7+3=______
1.2×0.8=______	0.9×7=______	6.3÷0.021=______
1.5÷0.03=______	6.8-2.4÷3=______	5×0.7=______
0.43×5=______	3.6÷0.9-4=______	3.6-0.36×10=______
8.1-2.2=______	0.6÷0.3+0.5=______．

Answer 1

(1)/(2)：(7)/(10)=(5)/(7)	1.25：0.25=5	(5)/(6)-(1)/(6)=(2)/(3)
(1)/(6)×(1)/(3)÷(5)/(8)=(4)/(45)	65×0.2=13	9.8-0.98=8.82
1-0.1×0.1=0.99	0.13×7=0.91	0.7+3=3.7
1.2×0.8=9.6	0.9×7=6.3	6.3÷0.021=300
1.5÷0.03=50	6.8-2.4÷3=6	5×0.7=3.5
0.43×5=2.15	3.6÷0.9-4=0	3.6-0.36×10=0
8.1-2.2=5.9	0.6÷0.3+0.5=2.5

故答案为：(5)/(7)，5，(2)/(3)，(4)/(45)，13，8.82，0.99，0.91，3.7，9.6，6.3，300，50，6，3.5，2.15，0，0，5.9，2.5．