__Add 10,100 or 1000__

Add 5 to a Multiple of 5Add 10,100,1000 to a multiple of 10

Add 10,100,1000 to any Number

Add multiple of 10,100,1000 to multiple of 10

Add multiple of 10,100,1000 to any Number

__Subtract 10,100 or 1000__

Subtract 5 from a Multiple of 5Subtract 10,100,1000 from a multiple of 10

Subtract 10,100,1000 from any Number

Subtract multiple of 10,100,1000 from multiple of 10

Subtract multiple of 10,100,1000 from any Number