C20 · A useful packing label
Fictional ordinary teaching source. Keep the worked response with adults/after-own teaching; it is never a preset for a held own response.
C20
Nineteen whole mini-kit cards are available. Each complete pack needs five cards. Make as many complete packs as possible and leave any cards left over aside. How many complete packs can be made, and how many cards remain? Make a label a helper can use.
Adult worked possibility · after own attempt
Name 19 as the whole available collection and 5 mini-kit cards as the required size of each complete pack. Take exactly 5 at a time into a new named pack; check that size before calling it complete. There are 3 complete packs and 4 whole mini-kit cards aside. 5+5+5=15; 15+4=19. The requested number 3 names packs; 5 names members in one pack. A leftover group of fewer than 5 is not another complete pack. Count or rebuild all original members to check; repeated addition, known groups or a supported subtraction model are possible taught methods, not a required memorised division fact.