RAPA CODA NUMBO

RAPA CODA NUMBO is a pneumonic we use in school to aid mental calculations in maths:

PA - PArtitioning 

 RA - Round and Adjust

CO - COunt On

DA - Double and Adjust

DA

For example: 29 + 29 (Calculate 30 + 30 and subtract 2)

                      201 x2 (Calculate 200 + 200 and add 2)

NUMBO - Number Bonds