GREEK ALPHABET
Mathematics, science and engineering require a large number of symbols to stand for abstract objects, such as numbers, sets, functions, and spaces, so the use of Greek letters was introduced long ago to provide a collection of useful symbols to supplement the usual Roman letters. The table below lists all of the letters in the Greek alphabet with their names and pronunciations.
1) Say the following Greek letters aloud: Ρ, δ, π, μ, τ, ψ, α, λ, ε, ν, ξ, β, η, κ, ω 2) Choose the right answer:
1. If Lynn can type a page in minutes, what piece of the page can she do in 5 minutes?
A. 5/ B. - 5 C. + 5 D. /5 E. 1- + 5
2. If 300 jellybeans cost you dollars. How many jellybeans can you purchase for 50 cents at the same rate?
A. 150/ B. 150/ C. 6 D. 1500/ E. 600
3. If = 5 then 15 = 3 , then =
A. B. 2 C. 5 D. 10 E. 15
4. If the value of δ; and ω; in the following fraction are both tripled, how does the value of the fraction change?
A. increases by half B. decreases by half C. triples D. doubles E. remains the same
5. If = 3, then ( - ) =
A. 300 B. 459 C. 648 D. 999 E. 1099
6. Ann is reviewing her algebra quiz. She has determined that one of her solutions is incorrect. Which one is it?
A. 2 + 5 ( -1) = 9, = 2 B. - 3( -5) = 10, = 2.5 C. 4 + 3 = 28, = 4 D. 5 + 6 - 3 = 64, = 8 E. - 2 - 3 = 32, = 8 http://www.testprepreview.com/sat_practice.htm
3) Choose one of the words to complete the sentences:
1. When we …some numbers we find their sum. a) calculate b) add c) subtract
2. A quotient is found if we… the first number by the second. a) subtract b) divide c) combine
3. If a certain number is written down four times, one below the other, and the four equal numbers… the sum is four times that number. a) complete b) add c) continue
4. The number 4 multiplied by the number 4… the number 16. a) make b) consider c) carry out
5. To find how many times one number… in the other it is necessary to divide them. a) contain b) perform c) write
6. If we multiply one of the factors by the number 6 the product…six times greater. a) increase b) become c) decrease
7. In general a fraction can be … to lower terms if numerator and denominator are divisible by a single number, that is, if they have a common devisor. a) decreased b) reduced c) enhanced
8. The exponentiation can be read as: b … to the n-th power. a) raised b) increased c) lifted
http://methodiks.ucoz.ru/index/urok_2_basic_operations_exercises_continuation/0-244
4) Make a research and compose a short presentation about: A) trigonometric functions B) logarithm C) exponent D) other
|