>>214256103 (OP)
These two girls are both Chinese. They just add flags to push CCP propaganda that they are superior to all of the nations they steal technology from.
>>214256103 (OP) >>214256409
That's like monkeys taking pride in memorizing basic stuff, also i can solve the 2nd one in my head in like 5 seconds. Dumb chink bitch
>>214256721
It's useful only for multiplications of 90s, it's basically (a-b)(a-c) so in that case (100-3)(100-6)
They deliberately pick such numbers because that's a propaganda vid