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kak tolong Bantuin tgs MtK Aku yaa kak..soalnya bsk mau

Berikut ini adalah pertanyaan dari tasyaimuet10 pada mata pelajaran Matematika untuk jenjang Sekolah Dasar

kak tolong Bantuin tgs MtK Aku yaa kak..soalnya bsk mau dinilai, Aku kurang pahan jg..mkasih..pke cara yaa kak​
kak tolong Bantuin tgs MtK Aku yaa kak..soalnya bsk mau dinilai, Aku kurang pahan jg..mkasih..pke cara yaa kak​

Jawaban dan Penjelasan

Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.

Jawaban:

1) \frac{1}{2} + 2,25 - \frac{3}{4} \\ = \frac{1}{2} + \frac{225}{100} - \frac{3}{4} \\ = \frac{50}{100} + \frac{225}{100} - \frac{75}{100} \\ = \frac{275}{100} - \frac{75}{100} \\ = \frac{200}{100} \\ = \frac{2}{1} \\ = 2

2)75\% - 0,25 + 2 \frac{1}{4} \\ = \frac{75}{100} - \frac{25}{100} + \frac{9}{4} \\ = \frac{75}{100} - \frac{25}{100} + \frac{225}{100} \\ = \frac{50}{100} + \frac{225}{100} \\ = \frac{275}{100} \\ = \frac{11}{4} \\ = 2 \frac{3}{4}

3)1 \frac{4}{5} - (0,2 + \frac{3}{4} ) \\ = \frac{9}{5} - ( \frac{2}{10} + \frac{3}{4)} \\ = \frac{9}{5} - ( \frac{4}{20} + \frac{15}{20}) \\ = \frac{9}{5} - \frac{19}{20} \\ = \frac{36}{20} - \frac{19}{20} \\ = \frac{17}{20}

4)0,85 - 0,27 + 2 \frac{3}{5} \\ = \frac{85}{100} - \frac{27}{100} + \frac{13}{5} \\ = \frac{85}{100} - \frac{27}{100} + \frac{260}{100} \\ = \frac{58}{100} + \frac{260}{100} \\ = \frac{318}{100} \\ = \frac{159}{50} \\ = 3 \frac{9}{50}

5)15 \frac{4}{5} - 7,25 + 5 \frac{1}{5} \\ = \frac{79}{5} - \frac{725}{100} + \frac{26}{5} \\ = \frac{1580}{100} - \frac{725}{100} + \frac{520}{100} \\ = \frac{855}{100} + \frac{520}{100} \\ = \frac{1375}{100} \\ = \frac{55}{4} \\ = 13 \frac{3}{4}

6)8 \frac{1}{2} - 6,75 + 45\% \\ = \frac{17}{2} - \frac{675}{100} + \frac{45}{100} \\ = \frac{850}{100} - \frac{675}{100} + \frac{45}{100} \\ = \frac{175}{100} + \frac{45}{100} \\ = \frac{220}{100} \\ = \frac{11}{5} \\ = 2 \frac{1}{5}

7)15\% + 8,4 - 2 \frac{3}{4} \\ = \frac{15}{100} + \frac{84}{10} - \frac{11}{4} \\ = \frac{15}{100} + \frac{840}{100} - \frac{275}{100} \\ = \frac{855}{100} - \frac{275}{100} \\ = \frac{580}{100} \\ = \frac{29}{5} \\ = 5 \frac{4}{5}

8)25\% + (0,6 - \frac{1}{5} ) \\ = \frac{25}{100} + ( \frac{6}{10} - \frac{1}{5} ) \\ = \frac{25}{100} + ( \frac{60}{100} - \frac{20}{100} ) \\ = \frac{25}{100} + \frac{40}{100} \\ = \frac{65}{100} \\ = \frac{13}{20}

9)6,8 - (25\% + 2 \frac{1}{4} ) - 1,5 \\ = \frac{68}{10} - ( \frac{25}{100} + \frac{9}{4}) - \frac{15}{10} \\ = \frac{680}{100} - ( \frac{25}{100} + \frac{225}{100} ) - \frac{150}{100} \\ = \frac{680}{100} - \frac{250}{100} - \frac{150}{100} \\ = \frac{280}{100} \\ = \frac{14}{5} \\ = 2 \frac{4}{5}

10)9 \frac{2}{5} - 4,8 + (1 \frac{3}{4} - 50\%) \\ = \frac{47}{5} - \frac{48}{10} + ( \frac{7}{4} - \frac{50}{100} ) \\ = \frac{940}{100} - \frac{480}{100} + ( \frac{175}{100} - \frac{50}{100} ) \\ = \frac{940}{100} - \frac{480}{100} + \frac{125}{100} \\ = \frac{460}{100} + \frac{125}{100} \\ = \frac{585}{100} \\ = \frac{117}{20} \\ = 5 \frac{17}{20}

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Last Update: Mon, 12 Dec 22
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