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Middle School Math
Mathematik
Middle School Math
Dezimalzahlen

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 Name _____________________________ Date ___________________
Dezimalzahlen
Ganze.

 1 Breakfast is an important meal. Many people either skip it or just grab something on the run. When America was mostly agricultural, farm workers were hardy people who ate a big breakfast. They started work before the sun rose and often worked until long after sundown. Farmer Dell had farmland that measured1.4miles by2.5miles. He wanted to plant eight different crops in equally sized areas. Find the size, in square feet, of each section so Farmer Dell can get his crops planted and watch them sprout.
 2 Brian collects aluminum cans and takes them to the recycling center every week. He put recycling boxes in all the classrooms, the cafeteria, and the teachers' lounge. He put a sign on each box asking people not to put anything but aluminum cans in them. Every week, though, Brian finds objects other than aluminum cans in the recycling boxes. He estimates that ten percent of the weight of the material in the boxes is non-recyclable junk. The total weight of all the items collected in the recycling boxes this week was one hundred forty pounds. What was the weight of the aluminum cans, rounded to the nearest tenth pound?
 3 Dr. Thwump needs to make a calculation. In his super dangerous science experiment he must determine if the next step is safe or not. He must multiply98.97times46.28. If the product is greater than 4.6 x 103the procedure is safe. Is it safe?
 4 Sean's cow is very fragile, but she still gives about15.1gallons of milk a day. How many gallons does she give in one hundred eighteen days?
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 6 According to Newton's second law of motion, the force required to accelerate an object is equal to the mass of the object times the acceleration (F = ma). If the force applied to an object is 0.0076 kgm/s2and the acceleration is 0.19, then what is the mass of the object? You may assume that the friction is zero.

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