1. 9 Kodi + 5 Gross = ........ Buah 2. 3 Rim + 400 Lusin = ....... Lusin 3. 10 Lusin + 4 Gross = ....... Buah 4. 5 Gross - 10 Lusin = ........ Buah 5. 30 Kodi

Ijinkan saya coba jawab

No. 1 :
--> 9 kodi + 5 gross
= 9 (20) + 5 (144)
= 180 + 720
= 900 buah

No. 2:
--> 3 rim + 400 lusin
= 3 (500)+ 400 (12)
= 1500 + 4800
=6300 buah
=6300/12
= 525 lusin

No. 3 :
--> 10 lusin+ 4 gross
= 10 (12) + 4 (144)
= 120+ 576
= 696 buah

No. 4 :
--> 5 gross - 10 lusin
= 5 (144) - 10 (12)
= 720 - 120
= 600 buah

No. 5 :
--> 30 kodi - 3 gross
= 30 (20) - 3 (144)
= 600 - 432
= 168 buah
= 168/12
= 14 lusin

Note :
1 kodi = 20 buah
1 lusin= 12 buah
1 gross = 144 buah