2 kantong kerupuk berat 1 1/4 gr dan 2 3/4gr. dan 2 kantong masing2 1 1/4gr dan 3 1/2gr. taksiran total seluruhnya

1 1/4 + 2 3/4 = (1+2) 1/4+3/4= 4/4 = 1
= 3+1 = 4 gr
1 1/4 + 3 1/2 = (1+3) 1/4+1/2= 1+2/4 = 3/4
= 4 3/4 gr
jadi, 4 + 4 3/4 = 8 3/4 gr
maaf jika ada kesalahan