Actual spelling is hyaku not hiyaku hya and hiya have entirely different pronunciations. They are written with the same characters, but are writte...

Actual spelling is hyaku not hiyaku

hya and hiya have entirely different pronunciations.
They are written with the same characters, but are written differently. (character for ya is small)
ひゃ = hya
ひや = hiya　(word means cold water/sake)

I don’t do karate, but I do speak fluent Japanese, and trust me there is a difference.

also here are the accurate spellings for numbers 1-10, 100, 1000, 10,000 plus a few irregulars
1 ichi
2 ni
3 san
4 shi / yon
5 go
6 roku
7 shichi / nana
8 hachi
9 kyuu
10 juu
100 hyaku
1,000 sen
10,000 man

300 = sanbyaku
600 = roppyaku
800 = happyaku

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