Addition
5+5=
10
1-1=
0
12 what place is the 2 in?
ones
2 multiply by 3
6
S__ I__ac _ew__n
Sir Isaac Newton
12+10=
22
21-5=
16
76 what place is the 7 in?
tens
20 multiply by 2
40
__a _ov_l__e
Ada Lovelace
45+36=
81
34-21=
13
2,987 what place is the 9 in?
hundreds
36 multiply by 3
108
_e__rdo F____a__i
Leonardo Fibonacci
121+115=
136
79-56=
23
62,851 what place is the 6 in?
ten thousands
55 multiply by 5
275
A__n ___in_
Alan Turing
1,745+1,963=
3,708
543-467
76
6,486,350 what place is the 4 in?
hundred thousands
15 multiply by 15
225
P_______
Pythagoras