What an interesting thought, isn't it? How do you use multiplication to simplify addition of several numbers? Let's take a look at some practical examples that will clarify why it is beneficial to multiply while adding.
Suppose you are given the following numbers to add:
7 + 5 + 4 + 7 + 6 + 7. There is certainly nothing wrong with adding all 6 numbers in the order that were listed. On the other hand, if we multiply 3 x 7 = 21, we have quickly added half of the list of numbers that were given. To add the remaining numbers, 5 + 4 + 6 = 15. We know that 21 + 15 = 36.
Here's a practical example to consider.
Betty bought 20 pairs of socks for her grandchildren, and they were on sale for $2 per pair. How much did she spend?
Solution: Is it easier to add $2 twenty times, or use multiplication? Let's use multiplication! We quickly know that 20 x 2 = 40. Betty spent $40 (before tax) on her purchase today.
As we can see, there is more than one way to add a list of numbers. Use this great tip to simplify your life, and remember to share it with a friend!
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