Review patterns with students.  The patterns included are skip counting, multiplication table, and input-output tables.

This website gives teachers the ability to quickly create random numbers that can be used for adding, subtracting, multiplying, dividing, order of operations, finding rules, and learning to substitute values.  The spinners can be used with 2 to 12 sections in each spinner.  You can have up to 4 spinners.  It also contains a timer in which you can quickly turn the spinners into fun and visual activities.  Watch the YouTube Video on using the spinners to see how it can be used.

This is a Smartboard large button program that displays flashcards.  I have my students in teams and we play two-minute relay games where the team selects and answers and then moves to the end of the team.  The team that wins is the one that answered the most correct multiplication or division problems. You can also select add and subtract.

Here is a very elementary video worth showing your students in K-2
grade.  It is definitely very elementary, but Sesame Street does an
excellent job discussing subtraction.  It is quite entertaining.

Save the planet by destroying the aliens quickly.  Students need to solve addition problems in order to fire the weapon.  This will surely improve their additions skills and fluency.

In this game, students can compete against each other online to see who can get their jet ski to the end, the quickest by answering addition questions.

This is a fun song to help review or introduce basic addition and also math vocabulary to younger students.

In this 1st-grade math worksheet, students will determine which the whole number is missing from a number sentence. First-grade students will get an opportunity to demonstrate how whole numbers relate to each other in an equation. These numbers range from 1-20 and the math worksheet in a Valentine style, both font, and imagery. There are 8 number sentence questions.

Looking for a fun and engaging way to help your students review adding 1s, 10s, and hundreds? Look no further than Additionasaurus! This worksheet features a friendly dinosaur character that will keep your students motivated as they work through the problems. With a variety of addition problems that focus on ones, tens, and hundreds, your students will get plenty of practice and be well-prepared for more complex addition challenges.

This website gives a great example of using the commutative and associative properties of addition using Skittles.  There is a video available that will help demonstrate successful implementation.