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Finding the Number of Cubes (2)

Count the number of stacked cubes.

Example

cube(s) is(are) stacked on .
cube(s) is(are) stacked on .
cube(s) is(are) stacked on .
cube(s) is(are) stacked on .
So, cubes are used in all.

1. Count the number of stacked cubes. b.
a.

cubes cubes
   250   251   252   253   254   255   256   257   258   259   260