The Hazard of Using Calculators at School by Victor Guskov
... It is obvious that we can not manage without calculators today, but we must remember about simple mental computations and their significance for success or failure in math. I consider that it is necessary to lay emphasis once more – extensive using of calculators (especially at the first six or seven grades) leads to degeneration of pupils’ mental computational skills and afterward to deterioration of their learning ability.

Cooking for a Crowd? Need Large Quantity Recipes? Why Not Create Your Own? by Debra Haydel
... It is also a matter of "doing the math". To serve 25 with a 4-serving recipe, you can cook 5-6 individual batches of that recipe or, you can expand the recipe (no more then 2-4 times) and cook in batches accordingly. For example, to serve 25 from a 4-serving recipe, double the recipe to 8 and cook three batches or, triple it and cook two batches. To serve 18 with a 6-serving recipe, cook it three times or cook one 6-serving batch and one batch that has been doubled to serve 12.

Weight Loss One Step at a Time by Kory Doszpoly
... In addition, I still get to eat whatever I want one day a week. There are no time-consuming preparations to make or cooking to do. All I have to do is show up at the Subway® Restaurant down the road and pick whatever I feel like having. Everything is fresh and made right there. And finally, I monitor my progress using the online software I wrote that utilizes genuine nutritional data from Subway® making calorie counting a no-brainer. It tracks 16 different pieces of nutritional information ...

Increasing Brain Power by Tim Bryce
... For example, using an automated calculator allows our brain to relax while the machine performs the math. Too often I have seen people reach for a calculator to perform a simple computation as opposed to working it out with paper and pencil. They simply do not want to engage their brains. Further, I have seen whole engineering departments come to a standstill when power outages brought their computers down. Do they really lack the skills to continue their work?