Introduction: Faster Addition

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Step 1: Cut It in Pieces

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It's really hard to add 56,54,35 and 38 really fast in your head.My computer math teacher taught me this trick.Take each second digit in each number and add a zero in it's place .So now it's 50,50,30 and 30.That equals 160,but remember you still have those second digits which are 6,4,5 and 8 which adds to 23 ,add the 23 to the 160 which adds to 182.If you have a problem like 16 plus 20 take away the 6 which makes it 10,now add the 20 plus the 10 which makes it 30 now take that 6 you took away from ten and add it to the 30 which makes the final answer 36.

Step 2: Practice

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Step 3: Be the First One Done in Math Class

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About This Instructable




Bio: I'm fourteen and homeschooled in NC. I've always liked growing plants and bringing joy to others.I'am in two 4-H clubs.I ... More »
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