Tus naj npawb ntawm rab koob ntawm cov hnab looj tes xov paj mas feem ntau cuam tshuam qhov ntom ntom ntawm hnab looj tes. Tus naj npawb ntawm rab koob yog siab. Qhov ntom ntab ntawm cov hnab looj tes loj yog siab. Nquag siv yog 7 koob thiab 10 koob. Ntxiv rau cov hnab tes taw ntom ntom ntom nti, thaum lub hnab looj ntsej ntev ntev tib yam li 220 hli, lub tshuab rab koob 7-rab phom tuaj yeem xaws cov hnab looj tes Luj Loj, 70g khub lossis ntau dua, thiab 10 lub qhov ntev hnyav rau 70g khub.
Cov lus ceeb toom rau tus phooj ywg: Cov hnab looj tes muaj qhov sib npaug ntawm qhov ntev, qhov hnyav thiab cov khoom siv, qhov siab dua, qhov ntau dua tiv thaiv.
Tus naj npawb ntawm cov grams ntawm cov hnab looj tes xov paj yog feem ntau hu ua: qhov hnyav. Qhov nyhav ntawm cov hnab looj tes yog qhia raws li cov tuab ntawm hnab looj tes. Cov khoom siv, qhov loj thiab tuab yog tib yam, thiab lub cev hnyav yog loj thiab qhov tuab ntawm cov hnab looj tes yog loj.
Cov lus ceeb toom rau tus phooj ywg: Cov hnab looj tes yog tib yam li lwm tus, thiab qhov hnyav yog qhov loj thiab qhov kev tiv thaiv muaj zog.
Saib xyuas! Cov xov paj xov paj rwb muaj lub xov paj zoo, thiab cov hnab looj tes tuab tuab ntau ntxiv, uas tseem ntxiv qhov peev xim tiv thaiv.
Tus naj npawb ntawm rab koob: Hauv qee qhov chaw ib ncig, nws yog qhov tsim nyog yuav tsum tau ntxiv txheej hnav. Qhov loj ntawm hnab looj tes thiab cov tuab ntawm cov ntiv tes yog xav tau. Nov yog tus naj npawb ntawm rab koob. Tus naj npawb ntawm rab koob ntawm hnab looj tes paj rwb txiav txim lub hom phiaj. Piv txwv li: 7 rab koob txhais tau tias cov naj npawb ntawm rab koob ib nti ntawm ntos ntuag. 7 koob=7 koob ib nti. Txheeb ze rau 13 rab koob, 7 koob yog tuab thiab 13 koob yog nyias.
Grams: Ib lo lus tshwj xeeb rau kev lag luam hnab looj tes. Yeej tswj hwm qhov hnyav ntawm hnab looj tes nyob rau hauv qee yam. Txhua txhua 10 khub lossis 20 khub yog qhov siv uake, thiab qhov hnyav ntawm txhua qhov ntim yog tus nqi ntawm cov xov paj siv. Nws muaj 450 grams, 500 grams, 550 grams, 600 grams, 700 grams, 800 grams thiab lwm yam hnyav.