Caleb made a stack of popcorn balls on a table. He placed 16 on a table then added three more layers on top of them. Each layer
had four fewer balls than the previous layer. How many popcorn balls were in all in the stack
2 answers:
16 popcorn balls 1st layer 16+12+8+4 = 40 popcorn balls in the
12 popcorn balls 2nd layer stack.
8 popcorn balls 3rd layer
4 popcorn balls 4th layer
Hi! So if we lay out 16 popcorn balls, and each time we take away four, this is what would happen gradually,
16 bottom + 12 1st layer + 8 2nd layer + 4 3rd layer
16+12+8+4 = 40 popcorn balls!
( don't forget to use lables)
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