Addition

Rhif 1 digid + Rhif hyd at 20
1 digit number + Number to 20

Rhif 2 ddigid + 1
2 digit number + 1

Rhif 2 ddigid (Lluosrif o 10) + 10
2 digit tens number + 10

Rhif 2 ddigid + 1 digid
2 digits + 1 digit

Rhif 2 ddigid + Rhif 2 ddigid (Lluosrif o 10)
2 digit + 2 digit tens number

Rhif 2 ddigid + 2 ddigid
2 digits + 2 digits

Rhif 3 digid + 2 ddigid
3 digits + 2 digits

Rhif 3 digid + 3 digid
3 digits + 3 digits

Rhif 3 digid + 3 digid (Arian)
3 digits + 3 digits (Money)

Rhif 1 digid.1 lle degol + 1 digid.1 lle degol
1 digit.1 decimal place + 1 digit.1 decimal place

Adio rhifau mwy o faint
Addition with larger numbers

Adio rhifau a 2 lle degol
Adding numbers with 2 decimal places