Mathadazzles are intriguing number puzzles that sharpen your logical reasoning and problem solving talents, and put to use your knowledge of familiar and not-so- familiar numbers and mathematical operations. Your job is to use clues to place numbers 1 - 9 in a grid so that the numbers in rows and columns add to the circle sums at the ends of those rows and columns. And, some circle sums are missing. We tell you what they are, but you have to place them No doubt you recall odd and even numbers, but do you know about abundant, deficient, and, oh yes, perfect numbers? What about prime numbers?...

MATHadazzles are intriguing number puzzles that sharpen your logical reasoning and problem solving talents, and put to use your knowledge of familiar and not-so- familiar numbers and mathematical operations. Your job is to use clues to place numbers 1 - 9 in a grid so that the numbers in rows and columns add to the circle sums at the ends of those rows and columns. And, some circle sums are missing. We tell you what they are, but you have to place them No doubt you recall odd and even numbers, but do you know about abundant, deficient, and, oh yes, perfect numbers? What about prime numbers?...

MATHadazzles are intriguing number puzzles that sharpen your logical reasoning and problem solving talents, and put to use your knowledge of familiar and not-so- familiar numbers and mathematical operations. Your job is to use clues to place numbers -5, -4, -3, -2, -1, 1, 2, 3, 4 in a grid so that the numbers in rows and columns add to the circle sums at the ends of those rows and columns. No doubt you recall odd and even numbers, but do you know about square numbers and square roots and, oh yes, exponents? What about prime and composite numbers? Factors and multiples? The Fundamental Order...

Mathadazzles are intriguing number puzzles that sharpen your logical reasoning and problem solving talents, and put to use your knowledge of familiar and not-so- familiar numbers and mathematical operations. Your job is to use clues to place fractions 1/10, 2/10, 3/10, 4/10, 5/10, 6/10, 7/10, 8/10, and 9/10 in the nine cells of a grid so that the numbers in rows and columns add to the circle sums at the ends of those rows and columns. No doubt you recall odd and even numbers, but do you know about abundant, deficient, and, oh yes, perfect numbers? What about prime numbers? Square numbers?...

MATHadazzles are intriguing number puzzles that sharpen your logical reasoning and problem solving talents, and put to use your knowledge of familiar and not-so-familiar numbers and mathematical operations. Your job is to use clues to place numbers 1.0, 1.25, 1.5, 1.75, 2.0, 2.25, 2.5, 2.75, and 3.0 in the nine cells of a grid so that the numbers in rows and columns add to the circle sums at the ends of those rows and columns. Learn about different types of numbers while solving the 78 MATHadazzles problems. To give you a head start, the various types of numbers and computations with them are...