4 ms·
Is there a common core method to teach arithmetic in different a different base, like 8 or 16? The "old way" algorithm still works with different bases, you ju
by bfung 9y ago
Is there a common core method to teach arithmetic in different a different base, like 8 or 16?
The "old way" algorithm still works with different bases, you just change extend or truncate the rule for when to carry.
Easy to teach your kid hexadecimal arithmetic using old way, like how my parents taught me in like grade 4 or 5 - and now I program for a living, haha
- gus_massa 9y agoIf you ignore the "anchor to 5s" part that is ridiculous, the other parts work in other bases too. D3-A7 = (D3-B0) + (B0-A7) = (D3-B0) + 9 = (D3-D0) + (D0-B0) + 9 = (D3-D0) + 20 + 9 = (D3-D0) + 20 + 9 = 3 + 20 + 9 = 2C (I swear that I didn't cheat to make the calculation and I made it in the "string" representation of the hexadecimal form, without looking at the decimal form.) In hexadecimal can try to anchor to 8s, it should work. Perhaps anchoring to 4s may be better? [Disclaimer: I don't like it, but the method to do the calculation works in other bases.]