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Same tens digit? Instantly multiply them

Duration: 06:51Views: 15.2KLikes: 628Date Created: Jul, 2021

Channel: tecmath

Category: Education

Tags: mental multiplicationmental math trickmultiplication trickmath trickhow to multiply in your head

Description: This trick is a great one. It uses an amalgamation of other mental math techniques - and will have you smashing those calculations. Here is THE mental multiplication lesson playlist - progressing you through your mental multiplication. youtube.com/playlist?list=PLjbxBzUM6SLk4VGcPW1Jz2tZdaZ6YZEKa Here is that link how to multiply questions like 49 x 40 instantly youtu.be/yZULgerBRms The rest are links where I beg for money. To donate to the tecmath channel:paypal.me/tecmath To support tecmath on Patreon: patreon.com/tecmath To buy tecmath mechandise: teespring.com/stores/tecmath-store

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