0,75×1/9+1/8-0,8×3/8

Kelas 4 Matematika
Bab Pecahan

0,75 x 1/9 + 1/8 - 0,8 x 3/8
= 3/4 x 1/9 + 1/8 - 4/5 x 3/8
= 3/9 x 1/4 + 1/8 - 4/8 x 3/5
= 1/3 x 1/4 + 1/8 - 1/2 x 3/5
= 1/12 + 1/8 - 3/10
= 10/120 + 15/120 - 36/120
= -11/120

0.75 + 1/9 + 1/8 - 0.8 x 3/8
diubah kedesimal :
= 0.75 + 0.11 + 0.125 - 0.8 x 0.375
= 0.685

maaf kalau salah:)