| Range of Terms (top 100 most frequently used) |
Total | Textbook series (usage code) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||
| AREA OF TRIANGLE | 12 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 4 |
| COMPOSITE NUMBER | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| DENOMINATOR | 12 | 3 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 3 |
| DIVISION (FRACTION) | 12 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 |
| EQUATION | 12 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 3 | 4 | 4 |
| FACTOR (WHOLE NUMBER) | 12 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 4 |
| ISOSCELES TRIANGLE | 12 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| PARALLEL LINES | 12 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| PARALLELOGRAM | 12 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| PARALLELOGRAM (AREA) | 12 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| POLYGON | 12 | 4 | 3 | 3 | 4 | 3 | 4 | 3 | 3 | 4 | 3 | 4 | 4 |
| PRIME NUMBER | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| PRISM (VOLUME) | 12 | 2 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| PROBABILITY | 12 | 1 | 4 | 3 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 4 |
| PROTRACTOR | 12 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 |
| QUADRILATERAL | 12 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| RECTANGLE | 12 | 3 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| RIGHT ANGLE | 12 | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| SIMPLEST FORM (FRACTION) | 12 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 2 | 2 | 2 | 4 | 4 |
| SQUARE | 12 | 3 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| SUBTRACTION (INTEGER) | 12 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| TRIANGLE | 12 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 3 | 4 |
| ADDITION (INTEGER) | 11 | - | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 |
| ANGLE | 11 | 4 | 4 | 3 | - | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 |
| CIRCLE (AREA) | 11 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| CIRCUMFERENCE | 11 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | - |
| DEGREE (ANGLE) | 11 | 4 | - | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 |
| EQUILATERAL TRIANGLE | 11 | 4 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| EXPONENT | 11 | - | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 4 | 4 |
| FRACTION | 11 | 4 | 3 | 3 | 3 | 4 | 4 | 3 | 4 | 3 | 4 | - | 3 |
| FRACTION TO DECIMAL | 11 | 2 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | - | 3 |
| INTEGER | 11 | - | 4 | 4 | 4 | 3 | 4 | 3 | 3 | 4 | 3 | 4 | 4 |
| LCM (WHOLE NUMBER) | 11 | - | 4 | 3 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 4 | 4 |
| LINE SEGMENT | 11 | 4 | 3 | 3 | 4 | 2 | 4 | - | 4 | 4 | 2 | 3 | 4 |
| MEAN (STATISTICS) | 11 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| MODE (STATISTICS) | 11 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| NUMBER LINE (INTEGER) | 11 | - | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| NUMERATOR | 11 | 3 | 3 | 3 | - | 3 | 4 | 3 | 3 | 4 | 4 | 3 | 3 |
| OBTUSE ANGLE | 11 | 4 | - | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| OPPOSITIES (INTEGER) | 11 | - | 4 | 4 | 3 | 3 | 4 | 4 | 3 | 4 | 4 | 4 | 4 |
| PERCENT | 11 | 4 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| PERPENDICULAR LINES | 11 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 |
| PROBLEM SOLVING | 11 | 2 | 4 | - | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| PROPORTION | 11 | 4 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| RATIO | 11 | 4 | - | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 |
| RHOMBUS | 11 | - | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| TRIANGULAR PRISM | 11 | 2 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 3 |
| WHOLE NUMBER | 11 | 3 | 4 | 3 | - | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| ACUTE ANGLE | 10 | 4 | - | 4 | 3 | 4 | 4 | 4 | 4 | - | 4 | 4 | 4 |
| ADDITION (DECIMAL) | 10 | 4 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | - | - |
| ADDITION (FRACTION) | 10 | 4 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - |
| ADDITION PROPERTY (EQUATION) | 10 | 4 | 2 | 2 | - | 2 | 4 | - | 2 | 2 | 2 | 4 | 4 |
| COORDINATE (COORDINATE SYSTEM) | 10 | - | 4 | - | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 3 | 3 |
| DECIMAL | 10 | 4 | 3 | 3 | 3 | 3 | 3 | - | 3 | 3 | 3 | - | 3 |
| DIVISION (DECIMAL) | 10 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - |
| EQUIVALENT FRACTIONS | 10 | 4 | 4 | - | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | - |
| FACTOR TREE (WHOLE NUMBER) | 10 | 3 | 3 | - | - | 3 | 4 | 3 | 4 | 4 | 3 | 3 | 4 |
| GCF (WHOLE NUMBER) | 10 | - | 4 | 3 | 3 | 4 | 4 | 3 | 4 | - | 3 | 4 | 4 |
| HEXAGON | 10 | - | - | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 |
| LINE | 10 | 3 | 3 | - | 3 | 4 | 3 | - | 3 | 4 | 4 | 3 | 4 |
| LINE GRAPH (STATISTICS) | 10 | 2 | - | 4 | 3 | 2 | 3 | 2 | 2 | 3 | 2 | 4 | - |
| MEDIAN (STATISTICS) | 10 | - | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| METRIC UNITS | 10 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - |
| MIXED NUMERAL | 10 | 2 | 2 | - | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | 2 |
| MULT. PROPERTIES (EQUATION) | 10 | 4 | 2 | 2 | - | 2 | 4 | - | 2 | 2 | 2 | 4 | 4 |
| MULTIPLICATION (DECIMAL) | 10 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - |
| MULTIPLICATION (FRACTION) | 10 | 4 | - | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - |
| MULTIPLICATION (INTEGER) | 10 | - | - | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 |
| ORDERED PAIR (COORDINATE SYSTEM) | 10 | - | 3 | - | 3 | 3 | 4 | 3 | 4 | 3 | 4 | 4 | 4 |
| PENTAGON | 10 | - | - | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 |
| PLACE VALUE (NUMBERS) | 10 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | - | - |
| PLANE | 10 | 4 | 4 | 4 | - | 4 | 4 | - | 4 | 4 | 4 | 3 | 4 |
| POWER | 10 | - | 3 | 3 | - | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 |
| RECTANGLE (AREA) | 10 | 4 | 3 | - | 4 | 3 | 3 | 3 | 4 | - | 4 | 3 | 3 |
| REPEATING DECIMAL | 10 | - | - | 4 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| RIGHT TRIANGLE | 10 | - | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| SUBTRACTION (DECIMAL) | 10 | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 3 | 4 | - | - |
| SUBTRACTION (FRACTION) | 10 | 4 | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - |
| SURFACE AREA | 10 | - | - | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| VOLUME | 10 | - | - | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 3 | 4 | 4 |
| WORD PROBLEM (PERCENT) | 10 | 2 | 2 | - | 2 | 2 | 2 | 2 | 2 | - | 2 | 2 | 2 |
| ACUTE TRIANGLE | 9 | - | - | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| ASSOCIATIVE (ADD.) (WHOLE NUMBER) | 9 | 4 | 2 | 4 | 1 | - | - | 3 | 4 | 4 | 4 | 3 | - |
| BAR GRAPH (STATISTICS) | 9 | 3 | 4 | - | 3 | - | 3 | 3 | 4 | 3 | 3 | 3 | - |
| CENTER (CIRCLE) | 9 | 3 | - | - | - | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 |
| CIRCLE | 9 | 3 | - | - | - | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| CIRCLE GRAPH (STATISTICS) | 9 | 3 | - | 3 | 3 | 3 | 3 | 4 | 3 | 4 | 3 | - | - |
| COMMUTATIVE (ADD.) (WHOLE NUMBER) | 9 | 4 | 2 | 4 | 1 | - | - | 3 | 4 | 4 | 4 | 3 | - |
| CYLINDER (VOLUME) | 9 | - | - | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 4 | 4 |
| DIVISIBILITY (WHOLE NUMBER) | 9 | 4 | - | 3 | 3 | 4 | 4 | 4 | 4 | 4 | - | - | 4 |
| DIVISION (INTEGER) | 9 | - | - | 4 | 4 | 4 | - | 3 | 4 | 3 | 4 | 4 | 4 |
| DIVISION (WHOLE NUMBER) | 9 | 2 | - | 3 | 3 | 4 | 4 | - | 4 | 4 | 4 | - | 3 |
| ESTIMATING PRODUCTS (WHOLE NUMBER) | 9 | 3 | - | 3 | 3 | 3 | 4 | 4 | 2 | 4 | 4 | - | - |
| ESTIMATING SUMS (WHOLE NUMBER) | 9 | 3 | - | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | - | - |
| LCD (FRACTION) | 9 | - | - | 4 | 3 | 3 | 4 | - | 4 | 3 | 4 | 4 | 4 |
| NEGATIVE INTEGER | 9 | - | 3 | - | - | 3 | 4 | 3 | 4 | 3 | 3 | 4 | 3 |
| ORDER OF OPERATIONS (EQUATION) | 9 | 4 | 2 | 4 | - | - | 4 | - | 4 | 4 | 4 | 4 | 4 |
| PERIMETER | 9 | 4 | 3 | 4 | 4 | 4 | 4 | - | - | - | 4 | 3 | 4 |
| POINT | 9 | 3 | - | - | - | 4 | 4 | 3 | 4 | 4 | 4 | 3 | 4 |
| POSITIVE INTEGER | 9 | - | 3 | 3 | - | 3 | 4 | 3 | 4 | 3 | 3 | 4 | - |