2桁×2桁のかけ算のやり方 -How to Multiply 2-Digit by 2-Digit Numbers- そろばん10〜8級までは、かける数が1ケタでしたが、 そろばん7級ではかける数が2桁になります！ In Abacus Levels 10 to 8, the multiplier was a single digit, but in Level 7, the multiplier ...

Learn how to multiply 2-digit numbers mentally with this step-by-step guide for kids. Discover simple techniques to boost calculation speed, improve mental math skills, and build confidence for ...

This Maths article explains both the mental method and written method for multiplying a 2-digit number by a 1-digit number.