Mental Math Tricks, Count Up by Place Value to Add

We can quickly add numbers using mental math by starting with the first addend, and counting up by adding each place value of the other addend.
Try to add a group of numbers without paper and pencil by using this method.
Whether working as a cashier, trying to pass the G.E.D., or just wanting to add quickly, this video and the linked videos below will help you.
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3rd Grade Math 1.4, Mental Math Strategies for Addition
• 3rd Grade Math 1.4, Me...
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