beserta caranya besok di kumpulkan

4. 0,6 + 1 1/4 ÷ 2 1/4 + 40%
[tex] = \frac{6}{10} + \frac{5}{4} \div \frac{9}{4} + \frac{40}{100} \\ = \frac{6}{10} + \frac{5}{4} \times \frac{4}{9} + \frac{40}{100} \\ = \frac{6}{10} + \frac{5}{9} + \frac{40}{100} \\ = \frac{15 + 500 + 360}{900} \\ = \frac{875}{900} \\ = 0.97[/tex]
5. 60% + 1/5 - 0,3 x 1 3/4
= 60/100 + 1/5 - 3/10 x 7/4
= 60/100 + 1/5 - 21/40
= 120/200 + 40/200 - 105/200
= 55/200 = 11/40 = 0,275