Young mathematicians spin their way to a deeper number sense with this fun, collaborative activity. Using two spinners, one with the numbers 0-9 and the other with the decades 00-90, pairs of students take turns building and comparing...

Scroll down to find four fun addition and subtraction partner game boards, complete with endless opportunities for practice with numbers 0-38. Kids choose numbers from a number box and, depending on the game, either find the sum or the...

An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, students are taught how to first make a ten and then add on the rest. A similar method is also...

First graders are exposed to addition of three whole numbers in a math activity centered around Eric Carle's, The Very Hungry Caterpillar. As the teacher reads, young mathematicians use counters and ten-frames to symbolize the number of...

How long would it take to break into a safe by testing every possible combination of codes? Pupils view a video clip of this happening and must determine the total amount of time before success. They measure how long each step takes, add...

Practice counting by ones up to 20 with your kindergartners using this colorful class experiment. There are two versions for the lesson. Version 1: The Friday beforehand, send home a notice for the week assigning a different color for...

Develop mental math skills using these fun partner games. Covering basic operations, each one offers differentiation options, extension ideas, and clear directions. Dice or cards is all you'll need to keep kids' attention as they...

A plethora of activities make up a cross curricular choice page filled with math games—relay races, dice, and crossword puzzles—a survey challenge equipped with data organization, graphing, a quicksand recipe, Hula-Hoop activity to...

Help your class discover the commutative property of addition with this exploration of the addition table. By folding and coloring the table, a symmetry is found that directs students to an understanding of this crucial mathematical...

Explains how to add two-digit numbers by focusing on each column of digits as you add, rather than the entire numbers.

Students will decompose double digit numbers to add numbers together.

Students add two-digit numbers with these interactive flashcards. The resource demonstrates how to carry a "1" in the tens or hundreds column.

In this activity, students learn to build and add two digit numbers. They connect number words and numerals.

Learn how to add double-digit numbers in this lesson complete with examples, rules, and vocabulary.

This site explains how to mentally add two-digit numbers. Gives exercises and games to practice this skill.

Students solve two, three, and four-digit addition problems with carrying. The sum turns blue if correct.

Improve your computation skills using this interactive worksheet. Review two digit addition and subtraction facts. This worksheet gives students immediate feedback and is a suitable tool for short assessments or independent practice.

These interactive flashcards help students add two-digit numbers through 99. The problem changes color with the correct answer.

Practice several different levels of difficulty of addition problems from single digit all the way up to 3 digit with regrouping. You can also choose single digit addition with negative numbers. When you are finished you can print your...

You are on a trip and need to cross a bridge, but you have to pay tolls in coins. Solve this puzzle by making your way to the island only using 100 coins.

Did you know that you need to add a zero at the end of a numbers when you multiply two or more times; one zero for the tens number and two zeros for the hundreds.? Review the examples and then practices your skills with the two...

Explains how to add three or more multi-digit numbers.