If $25+10=35$25+10=35, what is the answer to $25+8$25+8?
Use the number line, to help you find the value of $26+37$26+37.
Use a strategy to find the sum of $13+45$13+45.
Use a strategy to find the sum of $28+37$28+37.
Estimate and determine the sum or difference of two whole numbers