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... a. (3.20 107) (1.720 105) = 5.504 1012 = 5.50 1012 The coefficient in the answer is expressed to three significant figures because one of the numbers being multiplied has only three significant figures. b. (1.00 103) (5.00 103) (3.0 10–3) = 15 103 = 1.5 104 To express the ans ...
... a. (3.20 107) (1.720 105) = 5.504 1012 = 5.50 1012 The coefficient in the answer is expressed to three significant figures because one of the numbers being multiplied has only three significant figures. b. (1.00 103) (5.00 103) (3.0 10–3) = 15 103 = 1.5 104 To express the ans ...
2005 - Pascal - CEMC - University of Waterloo
... Since P QRS is made up of three squares of side length 15 cm, then its area is 3(15 cm)2 or 3(225) cm2 = 675 cm2 . Answer: (B) 18. First, 20052 = 4020025, so the last two digits of 20052 are 25. We need to look at 20055 , but since we only need the final two digits, we don’t actually have to calcula ...
... Since P QRS is made up of three squares of side length 15 cm, then its area is 3(15 cm)2 or 3(225) cm2 = 675 cm2 . Answer: (B) 18. First, 20052 = 4020025, so the last two digits of 20052 are 25. We need to look at 20055 , but since we only need the final two digits, we don’t actually have to calcula ...
Elementary mathematics
Elementary mathematics consists of mathematics topics frequently taught at the primary or secondary school levels. The most basic topics in elementary mathematics are arithmetic and geometry. Beginning in the last decades of the 20th century, there has been an increased emphasis on problem solving. Elementary mathematics is used in everyday life in such activities as making change, cooking, buying and selling stock, and gambling. It is also an essential first step on the path to understanding science.In secondary school, the main topics in elementary mathematics are algebra and trigonometry. Calculus, even though it is often taught to advanced secondary school students, is usually considered college level mathematics.