1. Tentukan Hasilnya dalam bentuk pecahan biasa. a.) 1 2/5 × 0,6 = b.) 4,2 : 1 1/5 = c.) 30% × 2½ : 1¼ =

a.1 2/5*0, 6=7/5*6/10=42/50=21/25
b. 4, 2: 1 1/5=42/10: 6/5=42/10*5/6=7/2
c. 30%*2 1/2: 1 1/4=30/100*5/2*4/5=3/5

a. 1 2/5 × 6/10
= 7/5 × 6/10
= 42/50
= 21/25
b. 4,2 : 1 1/5
= 42/10 : 6/5
= 42/10 × 5/6
= 21/6
= 7/2
c. 30% × 2 1/2 : 1 1/4
= 30/100 × 5/2 × 4/5
= 3/10 × 5/2 × 4/5
= 60/100
= 3/5