Addition +
11+4=
15
18-2=
16
In 24 which place is the 2 in?
Tens
20+18=
38
16-8=
08
In 50 which place is the 0 in?
Ones
50+20=
70
50-18=
48
In 98 which place is the 8 in?
Ones
60+45=
105
18-18=
00
In 115 which place is the 100 in?
Hundreds
500+22=
522
100-20=
20
In 1,558 which place is the 1,000 in?
Thousands