TUGAS 2 Number and Arithmatic Operations [PDF]

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TUGAS 2 BAHASA INGGRIS MATEMATIKA



OLEH : M. ARIFIN ILHAM 21030095 PROGRAM STUDI MATEMATIKA NK FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN UNIVERSITAS NEGERI PADANG 2021/2022



Number and Arithmatic Operations PRACTICE 1 1. Read out the following operations, and for every operations name each number’s function. a. 1,209 +118 = 1,327  One thousand, two hundred and nine plus one hundred and eighteen equals one thousand, three hundred and twenty-seven.  One thousand, two hundred and nine and one hundred and eighteen is one thousand, three hundred and twenty-seven.  One thousand, two hundred and nine is added by one hundred and eighteen is equal to one thousand, three hundred and twenty-seven. 1,209 and 118 called addends or summands, and 1,327 is called sum. b. 135 + (-132) = 3  One hundred and thirty-five plus negative one hundred and thirty-two equals three.  One hundred and thirty-five and negative one hundred and thirty-two is three.  One hundred and thirty-five is added by negative one hundred and thirtytwo is equal to three. 135 is the minuted, 132 is subtrahend, and 3 is the difference. c. 2 – (-25) = 27  Two minus negative twenty-five is twenty-seven.  Two take away negative twenty-five equals twenty-seven.  Two is subtracted by negative twenty-five is equal to twenty-seven. 2 and 25 is addends or summands, and 27 is called sum. d. 52 – 65 = -13  Fifty-two minus sixty-five is negative thirteen.  Fifty-two take away sixty-five equals negative thirteen.  Fifty-two is subtracted by sixty-five is equal to negative thirteen. 52 is the minuted, 65 is subtrahend, and -13 is the difference. e. 9 x 26 = 234  Nine is multiplied by twenty-six equals one hundred and thirty-four.  Nine times twenty-six is one hundred and thirty-four. 9 is the multiplicator, 26 is the multiplicand, and 234 is the product. f. -111 x 99 = -10,989  Negative one hundred and eleven is multiplied by ninety-nine equals negative ten thousand, nine hundred and eighty-nine.



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Negative one hundred and eleven times ninety-nine is negative ten thousand, nine hundred and eighty-nine. -111 is multiplicator, 99 is the multiplicand, and -10,989 is the product. g. 36 : 9 = 4  Thirty-six is divided by nine equals four.  Thirty-six over nine is four. 36 is the divided, 9 is the divisor, and 4 is the quotient. h. 1375 : (-25) = -55  One thousand, three hundred and seventy-five is divided by negative twenty-five equals negative fifty-five.  One thousand, three hundred and seventy-five over negative twenty-five is negative fifty-five. 1375 is the divided, -25 is the divisor, and -55 is the quotient. 2. Fill the blank spaces with the right words. a. The times of three and seven is twenty-one. b. The operation that uses symbol “:” is called divison. c. 14 is the immediate successor of 13, and the predecessor of 13 are 1,2,…, and 12. d. The result of division is called quotient. e. Three multiplied by five equals fifteen. f. In 123,456,789, the hundred thousand digit is 4, and 9 is the units digit. g. We select a three number htu, as 100h + 10t + u, where h represents the hundreds digit, t represents the tens digit, and u represents the units digit. h. When we addition two numbers, for example seven plus thirteen, the answer (twenty) is called sum.



PRACTICE 2 1. Read out the following fraction a. 2/5  Two fifth / two over five b. ¾  Three fourth / three over four c. 5/8 x ¼ = 5/32  Five eights is multiplied by one quarter equals five over thirty-two  Five over eight times one quarter is five over thirty-two d. 2 ½ : 9/10 = 3 2/5  Two and one half is divided by nine over ten equals three and two over five.



e.



f. g. h.



i.



 Two and one half over nine over ten is three and two over five. 1/9 – 1/8 ≠ 1/24  One ninth minus one eights is not one twety-fourths.  One over nine is subtracted by one over eight is not equals one over twenty-four. 13,945.614  Thirteen thousand, nine hundred and fourty five point six one four. 43.554  Fourty-three point five five four. 6.9 x 2.2 = 15.18  Six point nine is multiplied by two point two equals fifteen point one eight.  Six point nine times two point two is fifteen point one eight. 72.4 x 61.5 = 4452.6  Seventy-two point four is multiplied by sixty-one point five equals four thousand, four hundred and fifty-two point six.  Seventy-two point four times sixty-one point five is four thousand, four hundred and fifty-two point six.



2. Fill the blank spaces with the right words. a. In the fraction seven ninths, seven is numerator, and nine is the denominator. b. The division of two thirds and a half is four over three. c. An integer plus a fraction makes a mixed numbers.



PRACTICE 3 Make a small conversation about gcd or lcm of other numbers. Ilham : I have two numbers, 72 and 81. Can you say their factors? Aldi



: The factors of 72 are 1,2,3,4,6,8,9,12,18,24,36 and 72. 1,3,9 and 81 are factors of 81



Ilham : So, what are their common divisors? Aldi



: They are 1,2,3, and 9.



Ilham : And what is the greatest common divisor of 72 and 81? Aldi



: It’s 9.



Exercise 1 Write down the spelling of these mathematical sentences. 1. 12 + 1/3 ≤ x – 7 Twelve plus one over third is less than or equal to x minus seven. 2. 3x x 26 > 20 : y Three of x is multiplied by twenty-six is more than twenty is divided by y. 3. x (2y + 3) ≠ 111.909 x is multiplied by both of two of y plus three is not equals to one hundred and eleven point nine zero nine. 4. (2 + x)/35 < 23/45 Both of two plus x over thirty-five is less than twenty-three over fourty-five.



Exercise 2 Use the right words to complete these sentences. 1. 2. 3. 4. 5.



2367 is divisible by nine. 3 is not factor of 34. The multiplication of three and four is twelve. Eighteen subtracted by twenty equals negative two. 3 is the numenator and 5 is the denominator of three fifths.



Exercise 3 1. Write down five first multiplies of 8. Answer : 8, 16, 24, 32, 40 are five first multiples of 8. 2. Write down all divisors of 18. Answer : 1, 2, 3, 6, 9, and 18 are divisors of 18. 3. Find all common divisors of eighteen and thirty-three. Answer : 1,2,3 and 6 are common divisors of eighteen and thirty-three. 4. Write down the simplest form of 91/234 Answer : The simplest form of 91/234 is 7/18 5. Find the sum of the reciprocals of two numbers, given that these numbers have a sum of 50 and a product of 25. Answer: a+b = 50 ; a.b = 25



1 1 b+a 50 + = = =2 a b a .b 25 6. What is the product of the greatest common divisor of 9633 and 4693 and the least common multiple of the same numbers? Answer : The greatest common divisor of 9633 and 4693 is 247 The least common multiple of 9633 and 4693 is 9633 7. Let x be the smallest of three positive integers whose products is 720. Find the largest possible value of x. Answer : the largest possible value of x is 8. 8. If P represents the product of all prime numbers less than 1000, what is the value of the units digit of P? Answer :163 are the units digit of P 9. Find a positive integer is eleven times the sum of its digits? Answer : 198 10. What is the greatest common divisor of 120 and 49? Answer : The greatest common divisor of 120 and 49 is 1/There is not greatest common divisor of 120 and 49 11. The product of 803 and 907 id divided by the sum of 603 and 37. What is the remainder? Answer : The remainder is 1. 12. The average of four consecutive even integers is 17. Find the largest of the four integers. Answer : The largest of the four integers is 20. 13. When the six-digit number 3456N7 is divided by 8, the remainder is 5. List both possible values of the digit N. Answer : N values that satisfy are 3 and 7