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“If you want to know how fast computers can solve certain mathematical problems, then integer multiplication pops up as some kind of basic building brick with respect to which you can express those kinds of speeds.” Most everyone learns to multiply the same way.We stack two numbers, multiply every digit in the bottom number by every digit in the top number, and do addition at the end.
“Everybody thinks basically that the method you learn in school is the best one, but in fact it’s an active area of research,” said Joris van der Hoeven, a mathematician at the French National Center for Scientific Research and one of the co-authors.
The complexity of many computational problems, from calculating new digits of pi to finding large prime numbers, boils down to the speed of multiplication.
At the counter you and your friend decide to order a pizza and soda. A small has six slices, a medium has eight, and a large has ten.
The two of you both want four slices of pizza to eat.
As you are placing your order a soccer team of 26 players enter and five guests leave. You and your friend make 2 people 26 soccer players= 28 guests 28 guests - 5 that leave= 23 guests left.
You can solve this problem using subtraction first like this: 26 soccer players - 5 that leave= 21 guests 21 guests 2 people (you and your friend)= 23 guests The answer is the same no matter which operation you use first to solve the problem.Van der Hoeven describes their result as setting a kind of mathematical speed limit for how fast many other kinds of problems can be solved.“In physics you have important constants like the speed of light which allow you to describe all kinds of phenomena,” van der Hoeven said.40 ounces of soda / 2 people (you and your friend)= 20 ounces of soda each You can also do the inverse operation for each of these problems: 8 slices of pizza / 2 people= 4 slices of pizza each 20 ounces of soda x 2 people= 40 ounces of soda altogether After your meal, you both decide to fill up the car with gas before hitting the road.Gas costs .00 per gallon and the car tank can hold 14 gallons. We solve this problem as follows: .00 per gallon x 14 gallons= to fill the car up with gas for gas / 2 people (you and your friend)= you each have to pay for gas The inverse for getting gas would be as follows: to fill up the car / 14 gallons= per gallon to pay for gas x 2 people= in total Using mental math to solve word problems allows you to solve problems quickly..pass_color_to_child_links a.u-inline.u-margin-left--xs.u-margin-right--sm.u-padding-left--xs.u-padding-right--xs.u-absolute.u-absolute--center.u-width--100.u-flex-align-self--center.u-flex-justify--between.u-serif-font-main--regular.js-wf-loaded .u-serif-font-main--regular.amp-page .u-serif-font-main--regular.u-border-radius--ellipse.u-hover-bg--black-transparent.web_page .u-hover-bg--black-transparent:hover. Content Header .feed_item_answer_user.js-wf-loaded . The word joined indicates addition: 4 cars in the lane 7 cars that joined= 11 cars in total To solve this problem, first we subtracted the cars that left and then added the cars that joined.We can also solve the problem this way: 7 cars in the lane 7 cars that joined= 14 cars 14 cars - 3 cars that left= 11 cars in total The answer is the same even though we solved the problem two different ways.2 people (you and your friend) x 4 slices of pizza each= 8 slices of pizza (medium pizza) They only have one size soda cup and it is 40 ounces.If you split it, how much soda will each of you get?