Count in 25s Learn how to count in 25s. Add and subtract 2-digit and 1-digit numbers Learn about adding and subtracting numbers with 2 digits and 1 digit. Number bonds to 100 Learn about number ...

Methods for adding and subtracting Learn about efficient addition and subtraction methods. Add 3-digit and 2-digit numbers Learn how to add 3-digit and 2-digit numbers using the column method.

It generates two random 3-digit numbers as arguments for the equation. It also randomly generates the addition (+) or subtraction (-) operator. If the operator is subtraction, then it makes sure that ...