Strategies for mental math: add in parts & use a known fact
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YouTubeMath Mammoth
Strategies for mental math: add in parts & use a known fact
I explain two basic strategies for mental addition, using several examples. The first one is that of adding in parts. For example, to add 36 + 47, we can add 30 and 40, and 6 and 7. Since 6 + 7 = 13, this problem becomes 30 + 40 + 13, which is easier than the original. Another strategy is to use a fact you already know to solve a similar ...
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explained ⬇️⬇️⬇️ Depression isn’t always visible. Sometimes the people who seem the happiest are fighting battles no one else can see. The friend who’s always laughing…. The person who keeps everyone else’s spirits up… Just because someone looks okay doesn’t mean they are. Depression doesn’t always look like tears or isolation. Sometimes it hides behind smiles, jokes, and “I’m fine.” That’s why it’s so important to check in on the people you care about…. not just when they’re visibly struggling,
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