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| Best Sellers Rank | #13,007 in Books ( See Top 100 in Books ) #2 in Number Systems (Books) #9 in Popular & Elementary Arithmetic (Books) #98 in Children's Puzzle Books (Books) |
| Customer Reviews | 4.6 out of 5 stars 250 Reviews |
T**
Great item
Good did book
D**D
It is what it is
Grandson who is a math fan loves sitting doing them so happy days.
P**
Educational
My son and I love it
K**2
Query …..how do you ‘score ?’
Like the puzzles ….and understand the ‘Time’ aspect…..but there is no explanation anywhere in the book, as to how you determine your ‘Score’ …..
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