Khan Academy: Arithmetic and Pre Algebra: Basic Subtraction

With several numbers already filled in, this math worksheet is sure to help your first graders with their subtraction. Three grids prompt learners to finish certain subtraction problems and fill in the answers. A great way to reinforce...

This video provides an overview of subtraction. Practice problems are available. [12:32]

A video explaining addition of a two-digit number and a one-digit number using the addition algorithm, objects and number lines. Practice problems are available. [9:47]

This video shows how to round a 4-digit number to the nearest ten. Practice problems are available. [1:04]

This video introduces basic addition concepts using objects and number lines to represent and add numbers. Practice problems are available. [7:42]

This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.

With endless possibilities, you can create custom flashcards to take to class as easy as 1, 2, 3! Let this flashcard creator do the work for you, just chose the level of difficulty, add or subtract, and the number of place values. Each...

Sal solves addition and subtraction equations with number 10 or less. Includes a video, transcript, and question and answer section.

Sal demonstrates the relationship between addition and subtraction using objects. Includes a video, transcript, and question and answer section. [2:05]

In this video lesson students are provided an introduction to addition by looking at multiple visual ways to represent addition.