1.180 × 5/100 = 9 siswa
2.15/1 - 2/5 =75/5 - 2/5 = 70/5 - 1/4 = 280/20 - 5/20 = 275/20 = 13 1/4
3. 6,0 - 1,4 - 2,2 = 3,4
4.19/1 × 5/2 × 50/1 = 19/20 l
5. a. JS/S = 15 × 150.000:1 =2.250.000 =22,5 km,b. JS × S = 4.500.000 × 1/150.000 = 30 cm
6.S = JP/JS = 5/4000 = 1:800
7. Pak Hasan , Pak Karta ,Pak Dono = Hasan + 3/2 Hasan + 4/3 Hasan ,Luas Seluruhnya = 6 + 9 + 8/6 , 138 = 23/6 Hasan , Hasan = 138 × 6/23 =36 m²,Karta = 3/2 × 36 = 54 m²,Dono = 4/3 × 36 = 48
8. 2 × 2.800.000,00 = 5.600.000,00