Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
History of trigonometry wikipedia , lookup
Law of large numbers wikipedia , lookup
Approximations of π wikipedia , lookup
Pythagorean theorem wikipedia , lookup
Large numbers wikipedia , lookup
Mathematics of radio engineering wikipedia , lookup
Weber problem wikipedia , lookup
Positional notation wikipedia , lookup
6th grade vocabulary 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Trillions-after billions (hundred billions) Ten-thousandths- 4th number to the right of the decimal (very small) Integers-positive and negative numbers on a number line (start with zero when + or -) Positive numbers= + Negative numbers= Square root- of a 100 is 10, or 64 is 8. Example: 81 is a perfect square. The square root is 9 Exponent- small number floating the top right of a number that means times it a certain number of times Squared- exponent of 2 example: 5 squared means 5 x 5 Cubed- exponent of 3 (goes with volume) Power- exponent bigger than 3 1/1 or 2/2 or 3/3 etc.= 1 Whole 12. Fractions to memorize (decimal equivalents) ½ = .5 or .50 13. Add or subtract fractions with diff. denominators ⅓=.33 (app) ¼= .25 etc. ¾ - ⅔ (make denom the same: 4 x 3 = 12) 4½ + 5⅓ = add the whole numbers last. First do the fractions 14. 15. 16. 17. 18. 19. 20. 21. 22. Cross multiply (< > =) finding comparison symbols. Not the same as multiplying fractions. Convert to decimals if have a fraction and decimal to compare(How: fall to right to get right) Out of means: example ¼ means 1 out of 4. Numerator on top out of in middle (line) Denominator on bottom ½ + ⅓= must make the denom. The same. %= percent. Usually speak of a 100% (goes with decimals) If want a percent of a number such as 6% then you need to multiply that number by .06 If want 25% then multiply it by .25 2.07 = 2 7/100 = 207/100 = equivalent – WHY (triangle the center one to find out) 23. 12 – (½ + ⅓) Do parenthesis first 24. Fractions: add and subtract: Example: 5 - 2 ¾ First turn 5 into 4 4/4 - 2 ¾ Second subtract 4 -2 and get the whole number 2 Third: subtract 4/4 - ¾ and get 1/4 Now put it all together and get 2 1/4 25. Half = ½ or .5 or .50 or even 2/4 ,etc. ♫ ► ♫♫ 26. Ratio=triangles to musical notes= 3:9 or 3/9 or simplify to 1/3 ►♫ ► ♫ ♫ ♫♫♫ 27. PEMDAS: () EXPONENT x ÷ + - (order of operations) 28. Juxtaposition: 5(8/2) means do parenthesis first and get 4. Take 4 and multiply by the 5 29. Juxtaposition: 5N (N= 7) would mean 5 x 7 30. 5 31. 32. 33. 34. . 6= 5X6 Algebra – missing variable and look for the rule. Put the number into spot of letter. Input- what you put in Output- what you get out Rule- way you get the answer right every time. It must work for everything to be correct. input output X Y 30 10 15 5 21 7 The rule is x ÷ 3 35. 36. 37. 38. 39. 40. 41. Angles: two edges meet to form them Acute: less than 90° degrees Obtuse: greater than 90° degrees Right: is 90° , perpendicular, Triangle rule of 180° (180 degrees)- all angles added together will equal 180 Quadrilaterals: parallelograms, trapezoid = 360° degrees Coordinate grid with fractions- count the spaces between 42. 43. 44. 45. 46. 47. Pi 3.14 = used to find circumference Circumference- all the way around a circle Diameter-line segment that passes through the center of a circle and has endpoints on the circle Radius- ½ of diameter Protractor-used to measure angles Missing sides of a shape equal what? What is the area? 14 12 48. 49. 50. 51. 52. 53. 54. Area of triangle, and other shapes: use mathematics chart Formula- an equation that states a fact or a rule expressed with symbols Base(bottom of something)/ base of exponent= a # multiplied by itself the number of times shown by an exponent Height- how tall (up and down / vertical) Perpendicular: B and H must be perp. Parallelogram- polygon with 4 sides (leaning rectangle)= all angles are equal to 360° Trapezoid – polygon with 4 sides = all angles are equal to 360° 55. 56. 57. 58. Circle graph: round graph to show percents or parts of a whole Stem and Leaf Plot: data where larger place place value are the stem and smaller are the leaves 4 32 = 43, 42 Line Plot-a graph using marks above a number on a number line to show the frequencey of data(information) Sample spaces- is the set of all possible outcomes of that experiment 59. Measure 60. Mean: add all numbers together and divide by the total number of numbers 61. Probability with a spinner (fraction of chance to get so and so) 62. Degrees of a circle: 360 63. Multiples: 12: 0, 12, 24, 36, etc. LCM: (least common multiples) example: 2: 0, 2, 4, 6 etc. & 6: 0, 6, 12, 18 The LCM is 6 64. The multiples of a number are the answers that you get when you multiply that number by the whole numbers 65. Extra: hypotenuse-in a right triangle, the side opposite the right angle