1) 2 1/2: 1 3/5 :4/10=

Kelas 4 Matematika
Bab Pecahan

2 1/2 : 1 3/5 : 4/10
= 5/2 : 8/5 : 2/5
= 5/2 x 5/8 x 2/5
= 5/8

2 ½ ÷ 1 ³/5 ÷ ⁴/10
5/2 ÷ 8/5 ÷ 2/5
5/2 × 5/8 × 5/2
125/32 ≈≈≈≈»»» 3,90625