**Adding 2 Digit And 1 Digit Numbers**. Another method to mentally add two two-digit numbers may be easier in some situations. This math worksheet is printable and displays a full page math sheet with Vertical Addition questions.

Learn all about adding two-digit numbers and adding three-digit numbers in this free lesson, which includes practice problems. Young kids can practice adding two-digit numbers by playing this interactive soccer math game. Download time may vary based on your internet connection.

### Double digit multiplication is simply single-digit multiplication done twice.

Write a program that will take an input of a two-digit integer and print its first digit (i.e. the number of tens).

After that, draw a sketch of place value blocks that make the number. Please wait while the test download. Adding Two-digit and One-Digit Numbers Without Regrouping.