Question

Scrieti urmatoarele fractii zecimale sub forma de fractii ordinare ireductibile : 0,5;12,25;0,36;1,05;4,25;0,005;1,025;0,625;1,450;0,008;2,325;0,4055;1,1255

Answer 1

0,5=5 supra 10
12,25=1225supra100
0,36=36 supra 100
REGULA: TOATE FRACTIILE CARE AU O SINGURA ZECIMALA SE SCRIE ?SUPRA10
CELE CARE AU 2 ZECIMALE SE SCRIE ? SUPRA 100
IAR CELE CARE AU TREI ZECIMALE SE SCRIE ? SUPRA 1000(in functie de cate 0 avem)

Answer 2

0,5=5/10=1/2
12,25=1225/100=49/4
0,36=36/100=9/25
1,05=105/100=21/20
4,25=425/100=17/4
0,005=5/1000=1/200
1,025=1025/1000=41/40
0,625=625/1000=5/8
1,450=145/100=29/20
0,008=8/1000=1/125
2,325=2325/1000=93/40
0,4055=4055/10000=811/2000
1,1255=11255/10000=2251/2000