Missing number worksheets
Equations with one empty box, for addition, subtraction, multiplication, division or a mix.
Two equal ratios written as fractions, with the missing value n always the last number, using numbers up to 50.
Two equal ratios written as fractions, with the missing value n always the last number, using numbers up to 50.
You can change any of these settings above. Press "New problems" for a fresh set with the same settings, or pick Version A to Z to print different sheets for neighboring desks. The answer key always matches.
Each problem gives two equal ratios with one missing value, called n. Write the proportion as fractions, with colons, or a mix. The missing value can always be the last one, or can be any of the four.
Every answer is a whole number. The solved example uses cross products: multiply across, then divide.
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.
Equations with one empty box, for addition, subtraction, multiplication, division or a mix.
Arithmetic Latin-square puzzles: fill the grid so every cage hits its target. Each puzzle has exactly one solution.
A 4×4 sudoku where circles show the product of two neighboring cells. Practices factors and logic together.