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Tolong ya segera Pipipipi.

Berikut ini adalah pertanyaan dari oma66 pada mata pelajaran Matematika untuk jenjang Sekolah Dasar

Tolong ya segera
Pipipipi.
Tolong ya segera Pipipipi.

Jawaban dan Penjelasan

Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.

Jawaban:

1. \: 2 \times 4 \frac{3}{8} - 5 \frac{3}{4} \\ = (2 \times \frac{35}{8} ) - \frac{23}{4} \\ = \frac{70}{8} - \frac{23}{4} = \frac{35}{4} - \frac{23}{4} = \frac{12}{4} = 3 \\ \\ 2. \: 1.25 - 0.5 \times \frac{1}{4} \\ = \frac{5}{4} - ( \frac{1}{2} \times \frac{1}{4} ) \\ = \frac{5}{4} - \frac{1}{8} = \frac{10 - 1}{8} = \frac{9}{8} = 1 \frac{1}{8} \\ \\ 3. \: \frac{1}{4} + 1.5 \div 0.25 \\ = \frac{1}{4} + ( \frac{3}{2} \div \frac{1}{4} ) = \frac{1}{4} + ( \frac{3}{2} \times \frac{4}{1} ) \\ = \frac{1}{4} + \frac{12}{2} = \frac{1}{4} + 6 \\ = \frac{1}{4} + \frac{24}{4} = \frac{25}{4} = 6 \frac{1}{4} \\ \\ 4. \: 2 \frac{4}{5} \times \frac{1}{8} - 0.15 \\ = ( \frac{14}{5} \times \frac{1}{8} ) - \frac{15}{100} \\ = \frac{14}{40} - \frac{3}{20} = \frac{7}{20} - \frac{3}{20} = \frac{4}{20} = \frac{1}{5} \\ \\ 5. \: 14.1 \div (1 \frac{3}{5} + 75\%) \\ = \frac{141}{10} \div ( \frac{8}{5} + \frac{75}{100} ) \\ = \frac{141}{10} \div ( \frac{8}{5} + \frac{3}{4} ) \\ = \frac{141}{10} \div ( \frac{32 + 15}{20} ) = \frac{141}{10} \div \frac{47}{20} \\ = \frac{141}{10} \times \frac{20}{47} = \frac{2820}{470} = 6

6. \: 10.125 - 34.125 \div 6 \frac{1}{2} \\ = 10.125 - (34.125 \div 6.5) \\ = 10.125 - 5.25 = 4.875 \\ \\ 7. \: 35\% + 2 \frac{4}{5} \times (0.25 + \frac{1}{5} ) \\ = \frac{35}{100} + \frac{14}{5} \times ( \frac{1}{4} + \frac{1}{5} ) \\ = \frac{7}{20} + \frac{14}{5} \times ( \frac{5 + 4}{20} ) \\ = \frac{7}{20} + ( \frac{14}{5} \times \frac{9}{20} ) = \frac{7}{20} + \frac{126}{100} \\ = \frac{35 + 126}{100} = \frac{161}{100} = 1 \frac{61}{100} \\ \\ 8. \: 2.5 \div \frac{1}{4} - 1 \frac{1}{5} \times 20\% \\ = (\frac{5}{2} \times \frac{4}{1}) - ( \frac{6}{5} \times \frac{20}{100} ) \\ = \frac{20}{2} - \frac{120}{500} = \frac{10}{1} - \frac{6}{25} \\ = \frac{250 - 6}{25} = \frac{244}{25} = 9 \frac{19}{25} \\ \\ 9. \: 4 \frac{4}{5} \times 0.4 - 1 \frac{1}{8} \div \frac{3}{4} \\ = ( \frac{24}{5} \times \frac{2}{5} ) - ( \frac{9}{8} \times \frac{4}{3} ) \\ = \frac{48}{25} - \frac{36}{24} = \frac{48}{25} - \frac{3}{2} \\ = \frac{96 - 75}{50} = \frac{21}{50} \\ \\ 10. \: 2.5 + \frac{3}{5} \times (75\% - \frac{1}{2} ) \\ = \frac{5}{2} + \frac{3}{5} \times (\frac{75}{100} - \frac{1}{2} ) \\ = \frac{5}{2} + \frac{3}{5} \times ( \frac{3}{4} - \frac{1}{2} ) \\ = \frac{5}{2} + \frac{3}{5} \times ( \frac{3 - 2}{4} ) \\ = \frac{5}{2} + ( \frac{3}{5} \times \frac{1}{4} ) = \frac{5}{2} + \frac{3}{20} \\ = \frac{50 + 3}{20} = \frac{53}{20} = 2 \frac{13}{20}

Semoga dengan pertanyaan yang sudah terjawab oleh kriskrisma dapat membantu memudahkan mengerjakan soal, tugas dan PR sekolah kalian.

Apabila terdapat kesalahan dalam mengerjakan soal, silahkan koreksi jawaban dengan mengirimkan email ke yomemimo.com melalui halaman Contact

Last Update: Wed, 05 Jan 22
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