V04D · Matched four-space paper

For picture cards for learning trays, 5 groups need 19 items each. Find the total using an efficient strategy and explain how its parts appear in the model.

Keep THIS full source attached. It is different from ordinary W practice or the eight-field Bench paper.

• My model

• My number sentence and strategy

• My check

• My useful message

Matching family vector; attach this selected source · Complete matching alternative