Mixed review addition
3rd Grade Math practice: Which is a good strategy for 520 + 180: mental math or drawing blocks. Part of add and subtract (Add and subtract).
~10 min
Decide whether to use a model, mental math, or the algorithm.
3rd Grade Math practice: Which is a good strategy for 520 + 180: mental math or drawing blocks. Part of add and subtract (Add and subtract).
Decide whether to use a model, mental math, or the algorithm.