8/31/26 - Teachers and Parents - You can now purchase a "forever" pass to MrNussbaum.com for $89. Your one-time purchase entitles you and your students to unlimited use of the entire site. It will never recur or renew. An annual subscription can always be purchased for $49 or a monthly subscription for $9.99.

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One day, when Will and his brother Gaby, were happily playing with their happy hamstars, the mean Black Widow appeared and took them all to his underground lair. Will and Gaby were heartbroken! Now, help Will save his happy hamstars by answering the adding and subtracting problems to unlock the gates to all of the cells in this hilarious math game! As you succeed in your mission, you'll earn tokens that can be used in the Happy Hamstar machine to earn Happy Hamstar Trading Cards. Try to collect all 15 and the RARE gold cards! See the instructional video for learn more. Classified Under: Math game, math games, addition game, addition games, subtraction game, subtraction games

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