DrillGrades 1 to 2Grades 3 to 4
Missing number worksheets
Equations with one empty box, for addition, subtraction, multiplication, division or a mix.
Pythagorean triple search
Find hidden Pythagorean triples in a grid of numbers: three in a row where the squares of two add up to the square of the third.
About this worksheet
The hidden items are Pythagorean triples written as three numbers in a row, such as 5, 12, 13 or 13, 5, 12, running across or down. Students test whether the squares of two of the numbers add up to the square of the third.
The grid hides exactly the triples the answer key lists and no accidental extras. Choose the largest number, the grid size and how many triples to find.
Printing
US Letter or A4, portrait: choose your paper size above. Print at 100 percent (actual size). Use "Black and white" for the copier, or "Color" for display pages and mini books.
Popular versions
Ready-made settings for common topics.
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