YOUTUBE EXPLANATION
429
534
+____
963
*first off, mental addition always goes left to right, starting with the big number. This eliminates the need to juggle borrowing and carrying over.
*next rule is never say the word plus or minus out loud or in your head. Doing so just needlessly clutters your mind. Just repeat values
*simply add from left to right and repeat values
Example:
429
534+
Nine hundred
Nine hundred twenty
Nine hundred fifty
Nine hundred fifty nine
Nine hundred sixty three
Our answer is 963!
-It's that easy! Mental addition is just zig zagging through the problem, repeating the values in a succinct manner until you reach the end.
Let's assume you were adding money. Like 4.29 + 5.34... Simply ignore the decimal points and add normally like in the example. With money all you have to do is put in a decimal point two places from the right when finished so that you have your cents.
*IMPORTANT RULE! When adding money remove the decimal points and treat dollars as hundreds. So instead of saying 4.29 dollars say four hundred twenty nine. This allows you to perform zig zag or mental addition.
