2. 75% - 0.25 + 2¼ =
3. 1⅘ - (0,2 + ¾) =
4. 0,85 - 0,27 + 2⅗ =
5. 15⅘ - 7,25 + 5⅕ =
6. 8½ - 6,75 + 45% =
7. 15% + 8,4 - 2¾ =
8. 25% + (0,6 - ⅕) =
9. 6,8 - (25% + 2¼) =
10. 9⅖ - 4,8 + (1¾ - 50%) =
1 sampai 5 di jadikan pecahan biasa
6 sampai 10 di jadikan desimal, pakai cara ya kak kalo bisa
[tex]1. \: \: \frac{1}{2} + 2.25 - \frac{3}{4} = \frac{1}{2} + \frac{225}{100} - \frac{3}{4} = \frac{1}{2} + \frac{9}{4} - \frac{3}{4} = \frac{2 + 9 - 3 }{4} = \frac{8}{4} = 2 \\ [/tex]
[tex]2. \: \: 75\% - 0.25 + 2 \frac{1}{4} = \frac{75}{100} - \frac{25}{100} + \frac{9}{4} = \frac{3}{4} - \frac{1}{4} + \frac{9}{4} = \frac{11}{4} \\ [/tex]
[tex]3. \: \: 1 \frac{4}{5} - (0.2 + \frac{3}{4} ) = \frac{9}{5} - ( \frac{2}{10} + \frac{3}{4} ) = \frac{9}{5} - ( \frac{1}{5} + \frac{3}{4} ) = \frac{9}{5} - ( \frac{4 + 15}{20} ) = \frac{9}{5} - \frac{19}{20} = \frac{45 - 19}{20} = \frac{26}{20} sederhanakan \: \frac{13}{10} \\ [/tex]
[tex]4. \: \: 0.85 - 0.27 + 2 \frac{3}{5} = \frac{85}{100} - \frac{27}{100} + \frac{13}{5} = \frac{17}{20} - \frac{27}{100} + \frac{13}{5} = \frac{85 - 27 + 260}{100} = \frac{318}{100} sederhanakan \: \frac{159}{50} \\ [/tex]
[tex]5. \: \: 15 \frac{4}{5} - 7.25 + 5 \frac{1}{5} = \frac{79}{5} - \frac{725}{100} + \frac{26}{5} = \frac{79}{5} - \frac{29}{4} + \frac{26}{5} = \frac{316 - 145 + 104}{20} = \frac{275}{20} \: sederhanakan \: \frac{55}{4} \\ [/tex]
[tex]6. \: \: 8 \frac{1}{2} - 6.75 + 45 \% = \frac{17}{2} - \frac{675}{100} + \frac{45}{100} = \frac{850 - 675 + 45}{100} = \frac{220}{100} \: sederhankan \: \frac{11}{5} = 2.2 \\ [/tex]
[tex]7. \: \: 15\% + 8.4 - 2 \frac{3}{4} = \frac{15}{100} + \frac{84}{10} - \frac{11}{4} = \frac{3}{20} + \frac{42}{5} - \frac{11}{4} = \frac{3 + 168 - 55}{20} = \frac{116}{20} \: sederhanakan \: \frac{29}{5} = 5.8 \\ [/tex]
[tex]8. \: \: 25\% + (0.6 - \frac{1}{5} ) = \frac{25}{100} + ( \frac{6}{10} - \frac{1}{5} ) = \frac{1}{4} + ( \frac{3}{5} - \frac{1}{5} ) = \frac{1}{4} + \frac{2}{5} = \frac{5 + 8}{20} = \frac{13}{20} = 0.65 \\ [/tex]
[tex]9. \: \: 6.8 - (25\% + 2 \frac{1}{4} ) = \frac{68}{10} - ( \frac{25}{100} + \frac{9}{4} ) = \frac{34}{5} - ( \frac{1}{4} + \frac{9}{4} ) = \frac{34}{5} - \frac{10}{4} = \frac{35}{5} - \frac{5}{2} = \frac{70 - 25}{10} = \frac{45}{10} = 4.5 \\ [/tex]
[tex]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{47}{5} - \frac{24}{5 } + ( \frac{7}{4} - \frac{1}{2} ) = \frac{47}{5} - \frac{24}{5} + ( \frac{7 - 2}{4} ) = \frac{47}{5} - \frac{24}{5} + \frac{5}{4} = \frac{188 - 96 + 25}{20} = \frac{117}{20} = 5.85 \\ [/tex]
[answer.2.content]
