Matematică
georgeagb93
12

1.Scrieti sub forma de fractie zecimala: . 7 supra 4 8 supra 25 11 supra 50 21 supra 250 2.Scrieti sub forma de fractie zecimala periodica simpla: 2 supra 9 7 supra 3 8 supra 7 10 supra 11 3. Scrieti sub forma de fractie zecimala periodica mixta: 5 supra 6 7 supra 12 41 supra 15 13 supra 18 1 supra 30 5 supra 24 4. Scrieti sub forma de fractie ordinara: 0,4 5,43 2,(1) 0,(12) 1,(123) 0,1(2) 0,12(3) 1,2(34)

+1
(1) Răspunsuri
cmihai14

[latex]1a). \frac{7}{4} =1,75 \\ \\ b). \frac{8}{25} =0,32 \\ \\ c). \frac{11}{50} =0,22 \\ \\ d). \frac{21}{250} =0,084[/latex] [latex]2a). \frac{2}{9}= 0,(2) \\ \\ b). \frac{7}{3} =2,(3) \\ \\ c). \frac{8}{7} =1,(142857) \\ \\ d). \frac{10}{11} =0,(90)[/latex] [latex]3a). \frac{5}{6} =0,8(3) \\ \\ b). \frac{7}{12} =0,58(3) \\ \\ c). \frac{41}{15}= 2,7(3) \\ \\ d). \frac{13}{18} =0,7(2) \\ \\ e). \frac{1}{30} =0,0(3) \\ \\ f). \frac{5}{24} =0,208(3)[/latex] [latex]4a).0,4= \frac{4}{9} \\ \\ b).5,43= \frac{543}{100} \\ \\ c).2,(1)= \frac{21-2}{9} = \frac{19}{9} \\ \\ d).0,(12)= \frac{12}{99} = \frac{4}{33} \\ \\ e).1,(123)= \frac{1123-1}{999} = \frac{1122}{999} = \frac{374}{333} \\ \\ f).0,1(2)= \frac{12-1}{90} = \frac{11}{90} [/latex] [latex]g).0,12(3)= \frac{123-12}{900} = \frac{111}{900} = \frac{37}{300} \\ \\ h).1,2(34)= \frac{1234-12}{990} = \frac{1222}{990} = \frac{611}{495}[/latex]

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