分数与小数互化50题
一、小数转化成分数:
0.3= 0.25= 0.45= 0.89=
1.06= 2.5= 0.375= 4.5=
0.27= 1.52= 0.5= 0.08=
3.28= 10.06= 3.2= 0.005=
0.45= 2.6= 0.785= 3.45=
8.7= 0.43= 0.17= 1.6=
二、分数转化成分数:(不能化成有限小数的保留两位小数)
1131= = = = 2445
2341= = = = 5558
5371= = = = 88810
1379= = = = 20101010
10
531321= 5= 201= 4= 420850
1215≈ ≈ ≈ ≈ 3366
1211≈ ≈ ≈ ≈ 77911
答案:
一、0.3=
310 0.25=1/4 0.45= 9/20 0.89=89/100
1.06= 53/50 2.5=5/2 0.375=3/8 4.5=9/2
0.27=27/100 1.52= 38/25 0.5= 1/2 0.08=2/25
3.28=82/25 10.06=
0.45= 9/20 2.6=13/5 0.785= 157/200 3.45=69/20
8.7= 87/10 0.43= 43/100 0.17= 17/100 1.6=8/5 31050 3.2=16/5 0.005=1/200
二、1= 0.5 1= 0.25 3= 0.75 1=0.2 2445
10
2341= 0.4 = 0.6 = 0.8 =0.125 55585371= 0.375 = 0.625 = 0.875 =0.1 888101379= 0.3 = 0.7 =0.9 =0.05 [1**********]321= 10.75 5= 5.625 201= 201.65 4=4.42 420850
分数与小数互化50题
一、小数转化成分数:
0.3= 0.25= 0.45= 0.89=
1.06= 2.5= 0.375= 4.5=
0.27= 1.52= 0.5= 0.08=
3.28= 10.06= 3.2= 0.005=
0.45= 2.6= 0.785= 3.45=
8.7= 0.43= 0.17= 1.6=
二、分数转化成分数:(不能化成有限小数的保留两位小数)
1131= = = = 2445
2341= = = = 5558
5371= = = = 88810
1379= = = = 20101010
10
531321= 5= 201= 4= 420850
1215≈ ≈ ≈ ≈ 3366
1211≈ ≈ ≈ ≈ 77911
答案:
一、0.3=
310 0.25=1/4 0.45= 9/20 0.89=89/100
1.06= 53/50 2.5=5/2 0.375=3/8 4.5=9/2
0.27=27/100 1.52= 38/25 0.5= 1/2 0.08=2/25
3.28=82/25 10.06=
0.45= 9/20 2.6=13/5 0.785= 157/200 3.45=69/20
8.7= 87/10 0.43= 43/100 0.17= 17/100 1.6=8/5 31050 3.2=16/5 0.005=1/200
二、1= 0.5 1= 0.25 3= 0.75 1=0.2 2445
10
2341= 0.4 = 0.6 = 0.8 =0.125 55585371= 0.375 = 0.625 = 0.875 =0.1 888101379= 0.3 = 0.7 =0.9 =0.05 [1**********]321= 10.75 5= 5.625 201= 201.65 4=4.42 420850