Jess made 3 different stacks of wooden blocks. The first stack was 7 blocks high, the second stack was 5 block(s) higher than the first, and the final stack was 7 block(s) higher than the second. Jess’ little sister knocked over the entire first tower, in the second tower she left 2 blocks standing, and in the final tower she left 3 blocks standing. How many blocks in total fell down?
Reason slowly and give your answer.
33
Jess’ second stack was 7 blocks + 5 blocks = 12 blocks.

Jess’ third stack was 12 blocks + 7 blocks = 19 blocks high.

Jess’ sister knocked down the second tower and knocked 12 blocks – 2 = 10 blocks knocked over.

Jess’ sister knocked down the final tower and knocked 19 blocks – 3 = 16 blocks knocked over.

Total blocks knocked over was 7 blocks + 10 + 16 = 33 blocks.

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The answer: 33