- Kiám-chhái tōe-kiû hun tsòe 12 kiong koh chi̍t kiong thàn ji̍t-thâu ê lō͘ ū 6806・8 lí, chīu tùi tōe-bīn kàu tōe-kiû-sim kúi-lí? Tek 13000.
- Kiám-chhái phah-kiû-po͘, îⁿ-îⁿ-ê, an tiong-sim kè-khì 50 tn̄g. Hit-po͘ kúi-bó͘? Tek 32・725.
- Kiám-chhái lâi se̍h ge̍h tio̍h kiâⁿ 22833 lí, chīu tùi ge̍h-bīn kàu tiong-sim kúi-lí? Tek 3634.
NIÛ-CHHNG
Khòaⁿ téng-bīn, niû-tiân hit-ê tô͘, siat-sú múi sù-hong-keng téng-bīn ū hē chi̍t-khia-siuⁿ-á, múi-bīn chi̍tchhioh sù-hong, chīu toh-téng ū chi̍t-ûn siuⁿ-á, koâiⁿ chi̍tchhioh: siuⁿ-á ê gia̍h 24 khia. Hē koh chi̍t-ûn, chīu siuⁿ-á 2 chhioh koâiⁿ, koh i-ê gia̍h = 24 × 2 = 48. Lâi koh hē, gia̍h éng = koâiⁿ × khoah × tn̂g. Tn̂g × khoah × koâiⁿ thang kiò-tsòe li̍p-hong-chek.
Kiám-chhái koâiⁿ , khoah, tn̂g ū kúichhùn, kúichhioh, á kúibā chīu li̍p-hong-chek tsòe li̍p-hong-chhùn, li̍p-hong-chhioh á li̍p-hong bā. Kiám-chhái tn̂g, khoah, koâiⁿ bô tâng-chi̍t-ê gia̍h-siaⁿ, chīu bē siong-sêng tio̍h hòa-tsòe tâng.
Siat-sú chi̍t-li̍p-hong-chhioh tsúi chhìn-tāng 1000 niú chīu chi̍t-khia-siuⁿ 3 bā 1 chhioh 6 chhùn tn̂g, 2 chhioh 5 chhùn khoah, 1 chhioh 4 chhùn chhim, ōe kham-tit kúitàⁿ tsúi?
3 bā 1 chhioh 6 chhùn tio̍h siá 3 1・6 in-ūi 10 chhùn 1 chhioh. Kî-û iā thang chiàu sió-sò͘ ê hoat lâi-kì. Lóng chiat tsòe chhioh, chīu siong-sêng, tit-tio̍h 37・1 li̍p-hong-chhioh. Ēng 1000 lâi-sêng, tit-tio̍h kúiniú tâng. Hòa-tsòe tàⁿ, tit-tio̍h 23 tàⁿ 18 kun 12 niú.