Equal Sign
Equals Sign
noun
How do you represent an equal number? With an equal sign.
とうごう
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
ここに等号を書き忘れているよ。
You forgot to write an equal sign here.
コウイチは等号の上と下の線が同じ長さじゃないとげきどする。
Koichi gets furious if the top and bottom lines of an equal sign are not the same length.
等号の右側の数式が正か負かについて、注意する必要があります。
You have to pay attention to whether the formula to the right of the equal sign is plus or minus.