Female elk can weigh up to six hundred pounds. in standard form, how many non-zero digits does this weight contain

600 >6<00 there is one non zero digit is the answer that i got

The answer is a because i went through all the other ones that it didn’t come out right

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post