Show how to use base ten blocks or sticks and bundles to solve the subtraction
problem . Feel free to use your creativity here – any correct picture or sequence of
pictures is suitable for this problem.
Did you use more of a take-away strategy or more of a comparison strategy in your
picture above? How can you tell?
Use the standard subtraction algorithm to solve . Do the steps in your
picture correspond to the steps in the standard algorithm? How can you tell?
Show how to use base ten blocks or sticks and bundles to solve the subtraction
problem . This time, draw a sequence of pictures that correspond to the steps in the
standard algorithm. Explain how each step in the algorithm is reflected in one of your
pictures. How do we see the final answer in your picture, and how do we know it is
correct?
2025-08-13 00:41:54