Question | Answer |
equilateral triangle | a triangle with all sides the same |
scalene triangle | a triangle with all sides different |
isoceles | a triangle with 2 sides the same and 1 different |
polygon | a closed figure with straight sides; many sides and many angles |
quadrilateral | a figure with 4 sides |
parallel lines | lines that are equidistant apart and will never cross |
perpendicular lines | lines that form a 90 degree angle |
intersecting lines | lines that cross |
congruent | same size same shape |
similar | same shape different size |
coordinates | ex: (5,3) over then up |
round | slip to the side and look for a five....if the number to the right is 5 or higher round up |
estimate | "That's abouuuuut....." quickly round number |
compare fractions | criss-cross multiply from bottom to top and then compare products |
order fractions | compare 2 at a time using criss-cross OR remember close numbers mean large; far apart numbers mean small fraction |
equivalent fractions | fractions that are the same amount but different size pieces ex: 1/2 = 2/4 |
translation | slide |
rotation | turn |
reflection | flip |
symmetry | cut figure in half, fold, and both halves match |
ray | one endpoint and goes on in one direction |
line | set of points that go on and on in both directions |
line segment | part of a line with 2 endpoints |
decimal place value | tenths, hundredths, thousandths |
add/subtract decimals | line up decimals no matter what and +/- normally |
compare decimals | write numbers under each other vertically and fill in zeros; remember that tenths are BIGGEST |
+\- like fractions | add or subtract numerator; leave denominator the same |
prime number | number that only has 1 and itself as factors |
composite number | number that has more than 2 factors; 1 is neither prime nor composite |
long multiplication | lattice or traditional |
variable | an unknown in an equation and is represented by a letter of the alphabet |
likelihood | possible, impossible, likely, unlikely |
probability | chances; can be written as fraction or 1 out of 5 |
area | space inside a figure; count boxes or length x width; label is sq in, sq ft, etc. |
perimeter | distance around figure; add all sides or count unit lengths; label is just cm, in, ft, units |
volume | Space inside a 3D solid; l x w x h; label is cubic ft, cubic in, cubic units |
fractions on number line | numerator and denominator close together--closer to 1 and far apart--closer to 0 |
line graph | display data; shows increases (ups) and decreases (downs); EX: temperatures |
bar graph | display data; good for comparing; need title, labels, bars, number scale |
median | the number in the middle of a set of data that is in least to greatest order |
mode | the number you see the MOST in a set of data that is in least to greatest order |
range | greatest minus least |
ordered pairs | found on a coordinate grid; over then up or x number then y number; found in parentheses |
2D | figures that have length and width; sides, corners |
3D | solid figures that have length, width, and height; faces, edges, vertices |
place value | going left--ones, tens, hundreds, thousands, ten thousands, hundred thousands, millions |
order decimals | write all numbers under each other vertically and line up decimals; fill in holes with zeros |
line plot | uses Xs to show data; holes are empty, clumps have a lot of Xs in one area |
factors | numbers you multiply together in multiplication problem |
multiples | like products; answers to multiplcation |
measure length | customary: in, ft, yd metric: mm, cm, m, km |
measure capacity | customary: cup, pint, quart, gallon metric: milliliters,liters |
measure mass | customary: ounces, pounds, tons metric: grams and kilograms |