# V04D · Full neutral source

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.

[Separate four empty response spaces](../own/V04.html#V04D) · [Exactly matching four-space paper](../paper/V04D.html)

Attach this complete source identity. No staff criterion/model is in this neutral route.