Math
posted by John on .
Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need to show the work on both problems thank you.
Perform the indicated operations
1010 two × 101 two
A25 sixteen × 4 sixteen

http://en.wikipedia.org/wiki/Binary_numeral_system
IN this, it is easy by shifting registers, one of the great advantages of binary.
1010 x 101= 1010+101000 and add
110010 (check the add, I did it in my head.)
a25x
base 16
a25
x 4
________________
4x5 = 20= 16+4 or 14
4x2=8
4xA=40=2x16+8 or 28
now add
2800
++80plus signs are inserted to line up
++14
____
total 2894 check that.
http://www.csgnetwork.com/hexmultdivcalc.html