Jawaban:
[tex]1) \frac{4}{11} + \frac{6}{11} = \frac{10}{11} [/tex]
[tex]2) 1\frac{2}{5} + 2 \frac{1}{2} \\ = (1 + 2) + \frac{2}{5} + \frac{1}{2} \\ = 3 + \frac{4}{10} + \frac{5}{10} \\ = 3 \frac{9}{10} [/tex]
[tex]3) \frac{2}{5} + \frac{1}{4} = \frac{8}{20} + \frac{5}{20} \\ = \frac{13}{20} [/tex]
[tex]4) \frac{13}{15} - \frac{7}{15} = \frac{6}{15} [/tex]
[tex]5)4 \frac{1}{2} - \frac{5}{8} = \frac{9}{2} - \frac{5}{8} \\ = \frac{18}{16} - \frac{10}{16} \\ = \frac{8}{16} [/tex]
6. 0,78 - 0,41 = 0,37
caranya
0,78
0,41
______ -
0,37
[tex]7) \frac{2}{5} \times 1 \frac{3}{4} = \frac{2}{5} \times \frac{7}{4} \\ = \frac{14}{20} [/tex]
[tex]8)30\% \times 25\% = \frac{30}{100} \times \frac{25}{100} \\ = \frac{750}{10.000} \\ atau \\ = 0,075 [/tex]
[tex]9) \frac{5}{12} \div \frac{2}{3} = \frac{5}{12} \times \frac{3}{2} \\ = \frac{15}{24} [/tex]
[tex]10)8,4 \div 0,2 = \frac{84}{10} \div \frac{2}{10} \\ = \frac{84}{10} \times \frac{10}{2} \\ = \frac{840}{20} \\ = 42 [/tex]
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