Kak tolong bantu No 1,3,5,8,12 Sama cara nya yah kak

1. 0,45
3. 1,215
5. 15/16
8. 9/80
12. 21/100

0,5×0,9=0,45
0,81×1,5=1,215
3/8×2,5=0,375×2,5=0,9375
3/4×15&=0,75×0,15=0,1125
35%×0,8×3/4=0,35×0,8×0,75
=2,80×0,75
=2,1000