[tex] \frac{50}{100} \times 300 = 50 \times 3 = 150[/tex]
[tex]300 - 150 = 150[/tex]
[tex] \frac{100}{100} \times 300 = 1 \times 300 = 300[/tex]
[tex]300 - 300 = 0[/tex]
[tex] \frac{3}{25} \times 300 = 3 \times 12 = 36[/tex]
[tex]300 - 36 = 264[/tex]
[tex] \frac{7}{30} \times 300 = 7 \times 10 = 70[/tex]
[tex]300 - 70 = 230[/tex]
[tex] \frac{8}{15} \times 300 = 8 \times 20 = 160[/tex]
[tex]300 - 160 = 140[/tex]
[tex] \frac{40}{100} \times 300 = 40 \times 3 = 120[/tex]
[tex]300 - 120 = 180[/tex]