2=100
3
4 =10000
5
6
7
.
add
subtract
1*
35
2*
70
4
140
8*
280
1+2+8=11
35+70+280=385
1
25*
2
50*
100
8
200*
16
400*
32
800*
1+2+8+32=43
25+50+200+800=1075
http://www.math.buffalo.edu/mad/Ancient-Africa/mad_ancient_egypt_arith.html
2=100
3
4 =10000
5
6
7
.
