kerjakan pengurangan 1.5/8-30%= 2.1,28-2/25= 3.2 1/2-0,45 4.99%-9/10= 5.1,75-80%= 6.3/75-9/4= 7.60%=0,25= 8.0,94-24/25= 9.35-120% -3/4= 10.19/20 15%-0,41=

1. 5/8 - 30/100 = 5/8 - 3/10 = 25/40 - 12/40
= 13/40
2. 128/100 - 2/25 = 32/25 - 2/25 = 30/25
= 6/5 = 1 1/5 (satu, satu per lima)
3. 5/2 - 45/100 = 5/2 - 9/20 = 50/20 - 9/20
= - 41/20
4. 99/100 - 9/10 = 99/100 - 90/100 = 9/100
5. 175/100 - 80/100 = 95/100 = 19/20
6. 12/300 - 675/300 = -663/300
= 2 63/300 = 21/100
7. 60/100 - 25/100 = 35/100 = 7/20
8. 94/100 - 24/25 = 94/100 - 96/100 = -2/100
= -1/50
9. 35 - 120/100 - 3/4
= 3500/100 - 120/100 - 75/100
= 3380/100 - 75/100 = 3305/100 = 661/20
= 33 1/20 (tiga tiga, satu per duapuluh)
10. 19/20 - 15/100 - 41/100
= 76/100 - 15/100 - 41/100 = 20/100 = 1/5