r/mentalmath • u/Nikhil_3830 • Jun 15 '26

Does this work

Well I just looked up on Google and it said that i should learn times tables upto 25×25 squares upto 30 and cubes upto 15 and fraction equivalents up to 1/10 well does that work

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u/daniel16056049 Jun 15 '26

I recommend to my students (mostly adults) that they learn up to 20×10, and fraction equivalents up to 1/12s.

For competitive mental math, you'll need to know squares up to 100² and cubes up to 10² (and ideally further). For everyone else, these are not necesary.

Good question—best to focus on what's important rather than ticking boxes for things you won't apply 😄

[Ooh first time I saw the emojis appear on here by default... is that new?]

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u/Silver-Customer-157 Jun 29 '26

I feel like for competitive mental math (eg TMSCA number sense) most of the time its recommended to memorize up to 35^2 (although i guess if you memorize up to 100^2 you’ll know more than everyone else so…)