LIST OF TRICKS AVAILABLE AT THIS TIME

Middle School and High School Versions of
NUMBER SENSE COMPUTERIZED - 1

               1.  Multiply by 25, 50, and/or 75                (25 x 44 = ?)
                   2.  Multiply by 11, 111, and/or 1111          (11 x 23 = ?)
               3.  Inverse Multiplication                           (4Y = 28,  Y = ?)
               4.  Difference of Squares                           (54 x 46 = ?)
               5.  Squares Less Than 30                          (24 x 24 = ?)
               6.  FOIL Multiplication                              (76 x 53 = ?)
               7.  Add & Subtract Whole Numbers           (1234 + 5678 = ?)
               8.  Multiply by 99 and/or 101                     (99 x 87 = ?)
               9.  Squaring Numbers Ending in 5 or 0        (35 x 35 = ?)
             10.  Multiply by 49 and/or 51                       (120 x 51 = ?)
             11.  Changing Base 10 to Base X                  (24 base 10 = ? base 5)
             12.  Changing Base X to Base 10                  (24 base 6 = ? base 10)
             13.  GCF and / or LCM                               (GCF(24,36) = ?)
             14.  Estimations                                          (1234 x 4567 = ?)
             15.  Numbers Above/Below 100                   (94 x 97 =?)
             16.  Cubes Less Than 26                             (12 x 12 x 12 = ?)
             17.  First/Last Digits Total 10                       (27 x 87 = ?)
             18.  Multiply Numbers Ending in 5                (35 x 55 = ?)
             19.  Teens Trick  (Multiply by 12-19)            (17 x 46 = ?)
             20.  Polygonal Numbers                               (5th triangular number = ?)
             21.  Division by 9                                        (1234 / 9 = ?)
             22.  Sides of Right Triangles                         (find legs or hypotenuse)
             23.  Add & Subtract Fractions                      ( 1 2/3 + 3 3/5 = ?)
 

 

Middle School and High School Versions of
NUMBER SENSE COMPUTERIZED - 2

               1.  Fraction Plus Its Reciprocal                  (3/4  +  4/3  = ?)
                   2.  Sum of 2 Special Squares                     (14^2 + 39^2 = ?)
               3.  A Times A over B                               (13 x 13/14 = ?)
               4.  Arithmetic Sequence                            (1+2+3+...+28 = ?)
               5.  Positive Integral Divisors                      (24 has ? divisors)
               6.  Relatively Prime                                  (? divisors relative to 76)
               7.  Roman Numerals                                 (123 = CXXIII)
               8.  Quadratic Equations                             (roots, sums, products)
               9.  Permutations - Combinations                (5P3 = ?)
             10.  Diagonals of a Regular Polygon             (pentagon has ? diagonals)
             11.  Multiplying Special Mixed Numbers       (4 2/5 x 4 3/5 = ?)
             12.  Binomial Expansion                              (3rd term of (2x+3)^3 is ?)
             13.  Repeating Decimals as Fractions            (212121... = ?/?)
             14.  Estimations 2                                       (12345^3 = ?)
             15.  Fahrenheit - Celsius                              (94 degrees F = ? C)
             16.  Sum of 3 Special Frations                     (1/12 + 1/20 + 1/30 = ?)
             17.  Liquid Measurement Conversions          (4 gallons = ? pints)
             18.  Linear Measurement Conversions          (356 inches = ? yds)
             19.  Geometric Sequence                             (4 x 2 x 1 x 1/2 ... = ?)
             20.  Percent Problems                                 (5% of 30 = ?)
 

 

Elementary School Version of
ELEMENTARY NUMBER SENSE COMPUTERIZED

               1.  Squaring Numbers Ending in 5 or 0        (35 x 35 = ?)
               2.  Cubes Less Than 13                             (12 x 12 x 12 = ?)
               3.  Multiply Numbers Ending in 5               (35 x 55 = ?)
               4.  Add & Subtract Whole Numbers           (1234 + 5678 = ?)
               5.  Squares Less Than 21                          (19 x 19 = ?)
               6.  Add & Subtract Fractions                     ( 1 2/3 + 3 3/5 = ?)
               7.  Multiply Difference of Squares             (54 x 46 = ?)
               8.  Division by 9                                        (1234 / 9 = ?)
               9.  Roman Numerals                                 (123 = CXXIII)
             10.  First/Last Digits Total 10                       (27 x 87 = ?)
             11.  Numbers Above/Below 100                   (94 x 97 =?)
             12.  Multiply by 25, 50, and/or 75                (25 x 44 = ?)
                13.  Multiply by 11, 111, and/or 1111          (11 x 23 = ?)
             14.  Inverse Multiplication                           (4Y = 28,  Y = ?)
             15.  2-digit FOIL Multiplication                    (76 x 53 = ?)
             16.  Teens Trick (Multiply by 12-19)           (17 x 46 = ?)
             17.  Estimations                                          (1234 x 4567 = ?)
             18.  Multiply by 99 and/or 101                     (99 x 87 = ?)
             19.  A Times A over B                               (13 x 13/14 = ?)
             20.  Multiplying Special Mixed Numbers       (4 2/5 x 4 3/5 = ?)
             21.  GCF and / or LCM                               (GCF(24,36) = ?)
             22.  Repeating Decimals as Fractions            (212121... = ?/?)
             23.  Percent Problems                                 (5% of 30 = ?)
             24.  Liquid Measurement Conversions          (4 gallons = ? pints)
             25.  Linear Measurement Conversions          (356 inches = ? yds)