Find the value of $89-26$89−26.
Find the value of $75-33$75−33.
Find the value of $54-32$54−32.
Find the value of $66-33$66−33.
Estimate and determine the sum or difference of two whole numbers
Create and solve single-step and multistep practical problems involving sums or differences of two whole numbers, each 9,999 or less