3/5+0,4dikali6/8:0,5

Jawab =
0,4 = 4/10 = 2/5
0,5 = 5/10 = 1/2
jadi,
3/5 + 2/5 × 6/8 ÷ 1/2
3/5 + 12/40 × 2/1
3/5 + 24/40
24/40 + 24/40
= 44/40
= 1 4/40
= 1 1/10

(3/5+0,4) x (6/8:0,5)
akan lebih mudah jika semua dalam bentuk pecahan

0,4 = 4/10 = 2/5
0,5 = 5/10 = 1/2

kita kerjakan dalam kurung satu satu
(6/8:0,5) = 6/8:1/2
= 6/8 / 2/1 = 12/8 = 3/2

(3/5+0,4) = 3/5+2/5 = 5/5 = 1

jadi soal diatas
(3/5+0,4) x (6/8:0,5)
= 1 x 3/2 = 3/2
= 1 1/2