Download 6 grade vocabulary 23. 12 – (½ + ⅓) Do parenthesis first

6th grade vocabulary
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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
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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)
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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.
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26. Ratio=triangles to musical notes= 3:9 or 3/9 or simplify to 1/3 ►♫ ► ♫
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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
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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
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10
15
5
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7
The rule is x ÷ 3
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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
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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?
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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°
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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