advertisement

Dr. H. Heris Hendriana, M.Pd. PERTEMUAN-3 SAYING MATHEMATICAL SYMBOLS (Membaca dan Memahami Simbol-simbol matematika) MATH SYMBOLS MEANINGFUL MATHEMATICS STATEMENT ≡ ≅ ∼ ≠ ≤ ≥ ∧ ∨ ∀ ∃ identically equal congruent with approximately not equal to less than or equal to greater than or equal to logical and logical or for all there exists MATH SYMBOLS MEANINGFUL MATHEMATICS STATEMENT Σ ∠ N Z R ∅ ∞ x∈X x∉ X ary summation angle the set of natural numbers the set of whole numbers (integers) the set of real numbers an empty set an infinity sign an element x belongs to a set X an element x doesn’t belong to a set X MATH SYMBOLS MEANINGFUL MATHEMATICS STATEMENT X⊂Y X∪Y X∩Y + − a set X is a subset of a set Y a union of sets X and Y an intersection of sets X and Y plus sign/added by minus sign/subtracted by MATH SYMBOLS MEANINGFUL MATHEMATICS STATEMENT × ÷ √ ⊥ π ! ∫ [a,b] multiplication/multiplied by division/divided by square root/radical sign orthogonal to/perpendicular pi = 3,14159… factorial ∫integral a numerical sign HOW TO SAY NUMBERS ( Cara Mengucapkan Bilangan) Number forms 1 digit numbers 2 digit numbers Number forms in English 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 zero, one, two, three, four,five, six, seven, eight, nine 10, 11, 12, 13, 14, 15, ten, eleven, twelve, thirteen, 16,17, 18, 19 fourteen, fifteen, sixteen, seventeen, eighteen, nineteen 20, 30, 40, 50, 60, 70, 80,90 twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety 3 digit 100, 300, 500, ... one hundred, three hundred, five hundred, ... 4 digit numbers 2000, 4000, … two thousand, four thousand,... 5 digit numbers Number forms Number forms in English 10 000, 30 000, ... ten thousand, thirty thousand,... 6 digit numbers 300 000 7 digit numbers 5 000 000 five million 8 digit numbers 30 000 000 thirty million 9 digit numbers 500 000 000 five hundred million 10digit numbers 2 000 000 000 three hundred thousand two billion HOW TO SAY ORDINAL NUMBERS ( Cara Mengucapkan Bilangan Ordinal) Ordinal numbers Word 1 2 3 4 5 6 7 8 9 10 first second third fourth fifth sixth seventh eight ninth Tenth Abbreviation 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th HOW TO SAY NUMBER COMBINATION ( Cara Mengucapkan Kombinasi Bilangan) Numbers 47 683 3562 Break down English Expression Equal (=) 40 + 7 ‘forty seven’ ‘six Equal (=) 600 + hundred and 80 + 3 eighty three’ Equal (=) 3000 + ‘three 500 + thousand five 60 + 2 hundred and sixty two HOW TO SAY NUMBERS WITH DECIMAL POINT ( Cara Mengucapkan Bilangan Desimal) Numbers 3.7 58.4 5.84 Break down English Expression Equal (=) 3 + 0.7 ‘Three point seven’ Equal (=) 50 + 8 + ‘Fifty eight point 0.4 four’ Equal (=) 5 + 0.84 ‘Five point eight four’ HOW TO SAY FRACTION ( Cara Mengucapkan Pecahan Math Expression English Expression Penyebut Pembilang 37/5 3/7 A numerator A denominator Thirty seven over five Three over seven Math Expression (Special Fraction) 1/2 1/3 2/3 1/4 ¾ 1/5 3/5 English Expression (Some fraction have a designated name, but the value of numerator should not more than the value of denominator) half one-third Two-thirds One-quarter Three-quarters One-fifth Three-fifths HOW TO SAY MATHEMATICAL EXPRESSION ( Cara Mengucapkan Pernyataan Matematika) Math Expression English Expression 25 + 352 = 377 Twenty five plus three hundred and fifty two is three hundred and seventy seven 45 – 56 = -11 Forty five minus fifty six is negative eleven Three multiplied by seven is twenty one Twenty four divided by six is four Four raised to the power of three is sixty four or four cubed is sixty four. 3 × 7 = 21 24 : 6 = 4 4^3 = 64 5^2 =25 Five raised to the power of to is Math Expression 𝟔𝟐𝟓 = 25 𝟑 𝟔𝟒 = 4 𝟓 𝟑𝟐= 2 x + y = 12 x = y – 10 x<y+3 English Expression The square root of six hundred and twenty five is twenty five The cube root of sixty four is four or the third root of sixty four is four The fifth root of thirty two is two x plus y is twelve The value of x is equal to the value of y minus ten The value of x is less than the value of y plus three