Who knows one hundred?
Upvote all interesting answers.
Accept the best answer.
Go on to the next number.
Ok, 100, here we go!
100 times the chullin must outnumber the terumah to be able to use the mixture. -Dave
100 years old was Avraham when Yitzchak was born. -jutky
פַרְעֹה נְכֹה fined Israel 100 talents of silver during the reign of יְהוֹאָחָז. (Kings 2 23:33) -HodofHod
(Ok, I know the gematrias got a little out there, but you try coming up with 50 other references for 100!)
There's a target of saying 100 blessings every day.
100 silver sockets for the mishkan:
40 on the north
40 on the south
16 on the west
4 under the paroches
(Parashas Trumah 26:19-25)
One HUNdred are the ZUZ in A man-EH.
(Fits the beat.)
The Gemara points out the Hebrew word for widow, "almanah", sounds a lot like the "maneh" she receives for her ketubah.
ויאמרו, שנים עשר עבדיך אחים אנחנו בני איש-אחד--בארץ כנען; והנה הקטן את-אבינו היום, ו*האחד* איננו
The words בנימן and האחד appear 100 times (each) in Tanach.
If terumah fell into chullin, the mixture is prohibited as terumah unless the chullin is 100 times the amount of terumah (in which case the terumah is nullified). -- Terumos 4:7
In Sefer Ner Lemeah R' Yerachmiel Zeltzer collected 100 answers (IY"H by us) to the following question:
In the Chanuka story, given that the oil would naturally have lasted for one day, wasn't only the continued burning on the second through seventh days miraculous, and shouldn't we therefore only celebrate for seven days?
Heter Me'ah Rabbanim - If a woman refuses to accept a Get, an allowance from 100 rabbis may allow her husband to remarry anyway.
100 is the price (in קשיטה) יעקב bought land near שכם for (Genesis 33:19).
לא דומה הלומד 101 פעמים ללומד 100 פעמים
it was the age of Avraham when Itshak was born.
בן מאה שנים כאילו עבר ובטל מן העולם
The cross-sectional area of the Mishkan (viewed from the East or West) was 100 square cubits (10x10).
Meyah Shearim is where I would like to be right now (at a Simchas Beis HaSho'eivah!)
The courtyard of the Mishkan was 100 amos in length.
It was said by a play on words that R' Moshe Feinstein's native city, Starobin, had "one hundred rabbis" (in Russian, "sta rabin") - in other words, one hundred laymen (baalei batim) who were fully knowledgeable enough that they could have served as community rabbis elsewhere.
A paper, a different version of which was apparently published in the J. Hal. Contemp. Soc., quotes the Tzemach Tzedek (Lubavitch, not Nikolsburg) as saying that 100 amos (cubits) is the distance water must travel underground before it comes up again to be considered a spring.
In the second בית המקדש, the היכל building (including the אולם) was 100 אמות tall by 100 אמות long by (at its widest point) 100 אמות wide. (Source: mishnayos Midos.)
Difficult circumstances increase the value of Torah learning by at least 100x.
אם למדת תורה בשעת הריוח אל תשב לך בשעת הדחק לפי שטוב לו לאדם דבר אחד בצער ממאה בריוח
100 zuz is how much more money a person wants when he already has 100 zuz.
One who has 100 wants 200.
100 is how old Sara was (in years) when she was like a twenty-year-old for beauty (or sinlessness, depending on your version of the Midrash Raba).
100 is how old (in years) one will die who will be said to have died young (Isaiah 65:20).
Lech Lcha = 100
Modim = 100
Hamalka = 100
Kaf = 100
Pach = 100
Also a Kesuba for a previously married woman is 100 Zuz.
100 is apparently the distance (in amos (cubits)) around a grave where one might assume he will find a piece of a corpse in the ground.
Some blogger quotes the Ben Ish Chay as saying that Adam was 100 amos (cubits) tall — but I have no other source for that, myself.
100 was Shem's age (in years) when his son Arpachshad was born (B'reshis 11:10).
What to do if you're not sure if you remembered to say Mashiv Haruach U'morid Ha'geshem in sh'moneh esrei?
If you've already said it 100 times, (some say only 90), we assume that you remembered to say it and you do not repeat sh'moneh esrei.
100 is the distance (in amos (cubits)) a carob tree moved, in a famous story recorded in Bavli, Bava M'tzia 59b.