"Eber lived 30 year and 400 year"

"Adam lived 900 year and 30 year and he died"

I'd probably just delete these two words since this use of "plus" may not be common in "international English"

This is fine, but I wonder if we're wise to use a less common use of ראש here, because lacking the context the student/pastor would naturally assume that the meaning is "the head is one" or something akin to that.

RESOLVED

Maybe start with an introduction, like: "The Hebrew writing system did not have numbers, and letter only started representing a numerical value long after the completion of the Old Testament. So in the Bible, numbers were always spelled out."

That is actually "two (feminine, dual) and sixty (masculine, plural) year (feminine, singular)"

Something else: the multiple of ten is the opposite gender, while the gender of the single digit matches the gender of the noun: GEN 11:16 אַרְבַּ֥ע וּשְׁלֹשִׁ֖ים‮‬ שָׁנָ֑ה four (singular, feminine?) and thirty (plural, masculine) year (singular, feminine).

dual

Need example(s) of multiples of 10. GEN 18:31 לֹ֣א אַשְׁחִ֔ית בַּעֲב֖וּר הָֽעֶשְׂרִֽים׃ I will not destroy it for the sake of the twenty.

Which can continue to look like a singular, even if they are functioning like a plural. Example: GEN 7:4 אַרְבָּעִ֣ים יֹ֔ום וְאַרְבָּעִ֖ים לָ֑יְלָה fourty day(s) and fourty night(s).

Add: "the numbers 11-19 are formed by simply writing numbers 1-9 followed by 10. So 11 is one ten, and 17 is seven ten. They are sometimes connected with a horizontal line (maqqeef). Example: JOS 15:41 עָרִ֥ים שֵׁשׁ־עֶשְׂרֵ֖ה sixteen cities"

smaller digit

Is this a definitive list? If so we should make that explicit.

Usually, but not always. Example of the exception: JOS 21:18: עָרִ֖ים אַרְבַּֽע׃ four cities.

I think we need to explain this term. As evidence for this I submit the fact that I had to google it myself ;)

In which case it can follow the noun: 2CH 3:15 עַמּוּדִ֣ים שְׁנַ֔יִם two pillars.

Missing: 100 (see GEN 5 and 11 for example),1.000 and 10,000. There is of course the discussion on if and if so where "eleph" should or could be translated as "unit" as opposed to "1.000" in the census of Numers, so maybe avoid those chapters when giving examples.

Isn't that because, unless in a compound number, the plural is used for the ten-fold of the number?

Two is either always, or usually in the dual (havn't found out if there are non-dual forms of 2).

"both of them".

Since it says "sometimes", perhaps also give an example of echad with the article: GEN 2:11 שֵׁ֥ם הָֽאֶחָ֖ד פִּישֹׁ֑ון "the name of the one was Pishon".