How to Write Math Arrays

Arrays illustrate math lessons with pictures or shapes.
••• shironosov/iStock/Getty Images

A math array is a way of writing multiplication expressions in terms of columns and rows of pictures or symbols that represent counting entities. It is a pictorial way to represent math facts. You can use symbols, such as circles, squares or triangles, to write math facts in arrays. The number of columns is the first number in the math equation; the number of rows is the second number in the math equation. The answer is the total number of all symbols. Arrays can make learning math easier for visual learners.

    Come up with a math fact you want to symbolize with an array. For example, 4 x 3, with "X" as the symbol.

    Use the first number to determine how many symbols to draw in the columns. In the example, the first number is 4, so draw four Xs to represent the number of columns: XXXX.

    Use the second number in the fact to determine the number of rows. The second number in the example is 3, so draw three rows of four Xs: XXXX XXXX XXXX

    Count by columns or by rows to get the answer, which in this case is 12.


    • This is a good way to teach visual learners about the multiplication process.

Related Articles

What are Imaginary Numbers?
How to Teach Multiplication to the Second Grade Using...
What Is a Mathematical Expression?
How to Calculate Arctan
How to Find the Line of Symmetry in a Quadratic Equation
How to Divide Rational Numbers
How to Find the Height of a Rectangular Pyramid
How to Convert Hours & Minutes to Decimals
Definition of Mean, Median & Mode
The Four Types of Multiplication Properties
How to Solve Inequalities
How to Identify a Numerical Coefficient of a Term
How to Find the Area of Squares
What is the Identity Property of Multiplication?
How to Factor Binomial Cubes
How to Teach Mathematics in the Primary School
How to Solve Inequalities With Fractions
How to Solve for Both X & Y
How to Find the Cross Sectional Area of a Pipe
How to Find the Number of Electrons
How to Solve a Parabola