かけ算がめんどくさいなら…【常用対数表の利用】

On the Equation Transformation Channel, I upload math videos for study purposes. [Sub-Channel] Goya Hideki    / @goyahideki   [Sub-Sub-Channel] G-Sen Lesson Preparation    / @g_sen_sei_2017   [Twitter]   / g_sen_sei   [Blog] Mathematics Blog https://okimath.com