# 놀라운 계산법 [ 인도베다수학 | 곱셈 ep.5 ]

Hello! I’m Hans, a Korean mathematics teacher. Let’s take a look at the multiplication method of Gelosia.

(Derived from indoveda mathematics) way.3) Gelosia multiplication (derived from indoveda mathematics) way.1) Vertical multiplication (general calculation) way.2) Horizontal multiplication (Indo-Beda mathematics)

See past time content hundred digit / ten digit / one digit Product of left two numbers=hundred digit Product of two numbers on the right=one digit Product of Inner Two Numbers + Product of Outer Two Numbers

=ten digit way.3) Gelosia multiplication (derived from indoveda mathematics) 1×2=2 3×2=6 1×1=1 3×1=3 You can see that the sum of the diagonals is the correct answer. It is called oblique multiplication or gellosia multiplication. Let’s practice one more time

Ex.2 way.1) Vertical multiplication (general calculation) way.2) Horizontal multiplication (Indo-Beda mathematics) way.3) Gelosia multiplication 2×3=6 4×3=12 2×1=2 4×1=4 You can see that the sum of the diagonals is the correct answer. 4 2+2=4 1+6=7 #%[email protected]… ㅠㅠ way.1) Vertical multiplication (general calculation) I’m a mathematician but I’m not good at math….ㅠㅠ; way.2) Horizontal multiplication (Indo-Beda mathematics) way.3) Gelosia multiplication 5×4=20 2×4=8 5×1=5 2×1=2 You can see that the sum of the diagonals is the correct answer. A year of 2019! Undeserved love … Thank you so much … I will work harder.

Please give me a lot of love in 2020. Happy New Year~^^ Thank you for watching!