算数「斜め計算法」2
Synopsis
二桁のかけ算 九九をを斜めにたすと答えが出ます。 「#shorts 」TITEKIYA.
![[How to use a scientific calculator] Calculating the hypotenuse and angle of a right triangle usi...](https://i.ytimg.com/vi/jYNkuHPVE6M/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLCVYmP3MuQ0Babi35VyB5zn1RkIDg)
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