Page:Pit Sòan Ê Chho͘ Ha̍k.djvu/66

Thiaⁿ ê个 tn̂g-khoah長闊 lâi-siong-sêng, chīu就 tit-tio̍h得著 230, chīu-sī就是 pho͘-thiaⁿ só͘所 tio̍h着 ēng用 ê个 tsng. Siong-ka相加, kiōng共 tit-tio̍h得著 838 tè.

Ū有 chi̍t-kńg-chhioh, tn̂g長 25 bā碼 1 chhioh尺, khoah闊 1 bā碼, iā也 ū有 chi̍t-keng-pâng, tn̂g長 19 chhioh尺, khoah闊 12 chhioh尺; beh欲 lâi-chhu, chi̍t-kńg-chhioh ōe會 kàu到 bōe袂?

In-ūi因為 bā碼, chhioh尺 bô無 chiàu照 tsa̍p十 chìn進, chīu就 bōe袂 tit-thang得通 ēng用 chhioh尺 ê个 gia̍h額 tsòe做 sió-sò͘小數, só͘-í所以 tio̍h着 chiong將 bā碼 hòa化 tsòe做 chhioh尺, chīu就 1 bā碼 tsòe做 3 chhioh尺, 25 bā碼 1 chhioh尺 tsòe做 76 chhioh尺: siong-sêng相乘, tit-tio̍h得著 228 pêng-hong-chhioh平方尺.

Ēng用 12, 19 lâi-siong-sêng iā也 tit-tio̍h得著 228; khó-kiàn可見 hit-kńg chhioh尺 tú-tú抵抵 kàu到 .

Chiah-ê遮个 siàu數數 ha̍k-seng學生 tio̍h着 sǹg算.

1. Ū有 iâm-tiâⁿ chi̍t-tn̄g一丈 sù-hong四方, pho͘ sì-kak-tsng, chi̍t-chhioh一尺 sù-hong四方, tio̍h着 kúi-tè? Tek得 100.
2. Iâm-tiâⁿ nn̄g-tn̄g sù-hong四方, chiah tio̍h着 kúi-tè tsng磚 thang通 pho͘-i? Saⁿ-tn̄g sù-hong四方 chiah kúi-tè? Tek得 400, 900.
3. Ū有 chhek-tiâⁿ 32 chhioh-pòaⁿ tn̂g長, 18 chhioh尺 8 chhùn寸 khoah闊, pho͘-tsng, chi̍t-tè chi̍t-chhioh一尺 sù-hong四方 tio̍h着 kúi-tè? Tek得 611.
4. Siat-sú設使 ng-tiâⁿ chi̍t-tn̄g一丈 sù-hong四方 tio̍h着 2 chin升 chéng-chí, chīu就 ng-tiâⁿ 8 tn̄g丈 sù-hong四方 tio̍h着 kúi-chhioh? Khoah闊 25 chhioh尺, tn̂g長 48 chhioh尺 tio̍h着 kúi-táu? Tek得 1 2 8; 2 4.
5. Bó͘-lâng某儂 ēng用 chio̍h-nn̄g pho͘ mn̂g-kháu, tn̂g長 24 chhioh尺, khoah闊 18 chhioh尺. Sai-hū師傅 phín chi̍t-tn̄g一丈 sù-hong四方 tio̍h着 nn̄g-kho͘-pòaⁿ gûn銀: Só͘-hùi所費 kiōng共 tio̍h着 kúi-kho͘幾箍? Tek得 10·8.
6. Chi̍t-khu-hn̂g, tn̂g長 75 chhioh尺, khoah闊 44 chhioh尺, tsai栽 ko-lê-chhài高麗菜, chi̍t-tn̄g一丈 sù-hong四方 ōe-tsai-tit 50 tsâng欉, chīu就 hn̂g-lāi kiōng共 thang通 tsai栽 kúi-tsâng? Koh閣, bōe袂 chi̍t-tsâng 30 chîⁿ錢, hn̂g-tsú kiōng共 ōe會 niá領 kui-kho͘-gûn, sǹg算 chi̍t-kho͘ 1100 chîⁿ錢? Tek得 1650, 45.
7. Ū有 chi̍t-keng-pâng, tn̂g長 18 chhioh尺, khoah闊 14 chhioh尺 4 chhùn寸, koâiⁿ懸 9 chhioh尺 5 chhùn寸; i-ê piah lóng攏 pè hoe-tsóa. Hoe-tsóa chi̍t-kńg, khoah闊 chi̍t-bā, tn̂g長 40 bā碼 ta̍t值 5 kho͘-gûn.

Chi̍t-keng mn̂g, thang-á, sió-khóa, m̄-sái毋使 sǹg-i, chīu就 só͘-ēng ê个 hoe-tsóa kiōng共 tio̍h着 kúi-kho͘-gûn? Tek得 8·55.