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Myers' Math Vocab
Myers' Math Vocab Grade 4
| 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 |
Created by:
Myersg
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