A pile of blocks has 60 in the bottom row, 54 blocks in the second row, 48 blocks in the third row, and so on until there is only 6
the top row. How many blocks are in the 8th row?
a) Given:
c) Solution:
b) Equation:
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Answer:
given:a pile of blocks has in the bottom row.
solution: subtraction
equation:60-54-48-6= -0
Answer:
A pile of blocks has 60 blocks in the bottom row, 54 blocks in the second row, 48 blocks in the third row, and so on until there are only 6 blocks on the top row. How many blocks are in the 8th row? 10th row?
Step-by-step explanation:
Note that each row has 6 blocks less than the one before. So, row n has 60-6(n-1)=66-6n blocks.
Now just use your values of n.