All the kinds
Number pyramid puzzle books
Every brick is the sum of the two below it, until a book changes the rule. Pick a kind you like. Most are for teens and adults; Pyramid Subtraction Adventures is for kids ages 6 to 9.
Cover images are the ones we have on file. The book you receive may show a slightly different cover.
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Ink-Blot Pyramids
Missing-digit logic puzzles: 120 math brain teasers from easy to expert, for ages 10 to adult.
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Pyramid Case Files
60 detective cases to solve with number pyramids, evidence and deduction, with full solutions. For teens and adults.
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Pyramidoku
120 number logic puzzles: place the numbers so every block is the sum of the two below it.
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Target Sum Pyramids
100 two-in-one puzzles: solve the pyramid, then hunt for the hidden sums.
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Symbol Pyramids
120 picture-algebra puzzles: every picture hides a number. Ages 9 to adult.
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Number Path Pyramids
130 pyramid-shaped number path puzzles for teens and adults.
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Matchstick Pyramids
120 brain teasers: move one stick to fix the math. Ages 10 to adult.
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Find the Wrong Brick
130 mistake-hunt puzzles: one brick in each pyramid is wrong.
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More or Less Pyramids
130 greater-than and less-than logic puzzles for teens and adults.
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Number Bank Pyramids
120 fit-the-numbers logic puzzles for teens and adults.
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Code Cracker Pyramids
104 letter-to-digit cryptarithm puzzles for teens and adults.
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Four Operations Math Pyramids
124 pyramids that add, subtract, multiply and divide.
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Mixed Operation Math Pyramids
124 pyramids that add, subtract and multiply, with hidden signs.
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Integer Pyramids
100 positive and negative number puzzles: a pre-algebra practice workbook.
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Target Sum Pyramids: Lucky Numbers
100 two-in-one puzzles: solve the pyramid, then hunt for lucky numbers.
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Word Pyramids
96 letter-building brain games: blend the tiles, spell the summit. For adults.
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Mystery Picture Pyramids
34 hidden pictures to reveal: solve the pyramids, join the dots, shade the bricks.
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The Big Book of Math Pyramids
504 easy to hard number pyramid puzzles for adults, with full solutions.
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Math Pyramid Maze
100 two-in-one number puzzles: solve the pyramid, then trace the maze. Full solutions.
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Linked Math Pyramids: Book One
130 connected number pyramids in three linked styles, easy to hard, with full solutions.
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Linked Math Pyramids: Book Two, Equation Edition
100 connected number pyramids solved with algebra, very hard to extreme.
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Pyramid of Pyramids
100 linked Triforce number pyramid puzzles, with full solutions.
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Math Pyramid Equation Puzzles: The Complete Course
All 10 levels from one variable to extreme, 4 to 9 rows.
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Math Pyramid Equation Puzzles: One Variable
600 very hard number pyramid puzzles, one variable, 4 to 9 rows, full solutions.
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Math Pyramid Equation Puzzles: Two Letters
600 expert and extreme puzzles with the two-letter technique, 6 and 9 rows.
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A Puzzle a Day: 365 Equation Pyramids
A 'Call It x' puzzle a day for a year, with full solutions.
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Pyramid Subtraction Adventures
100 take-away number puzzles for kids, ages 6 to 9.
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