Tag Archives: mental math

Mental Math of 45 x 25

Wow. I suck at this #MTBoS30 thing. Couple days ago I tweeted this out because my kids were working on the same one. Thousands of folks — okay, maybe 7 or so people — responded, and I thought it’d be fun to see what some common and not-so-common strategies were. Most common (22 people): (40 x 25) + […]

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My old math talks site needed to die. It was riddled with missing image icons and plagued by shitty formatting. I had to fix the main blog and do other things, so this could wait. Only 2 or 3 people in the universe were checking it out anyway. Although traffic to math talks is low to nil, I’m really fond of it. […]

Posted in General, Teaching | Also tagged , , , , , | 14 Responses