how to do mental math useing propertys
No difference. Both require you to think it out rather than write it out.
You can, if you wish.
you answer it!
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how to do mental math useing propertys
510 divide by 52 using mental math and using long div = 9.807692307692308
GIMME THE ANSWER
5*9 = 45 so 50*90 = 4500.
You
3.4
4 x 8 = 32. Add 2 zeros. 40 x 80 = 3200
No difference. Both require you to think it out rather than write it out.
You can, if you wish.
70
mental math
x=62