Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth instructional activity in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first...

Develop young mathematicians' fluency with subtracting mixed numbers using this collection of practice problems. Addressing the subtraction of mixed numbers with and without regrouping, this resource clearly models each process...

Practice adding and subtracting mixed numbers with common (like) denominators. Items require regrouping (borrowing).