| 97-XX |
|
|
Mathematics education |
|
97Fxx |
|
Arithmetic, number theory |
|
|
97F10 |
Comprehensive works |
|
|
97F20 |
Pre-numerical stage, concept of numbers |
|
|
97F30 |
Natural numbers |
|
|
97F40 |
Integers, rational numbers |
|
|
97F50 |
Real numbers, complex numbers |
|
|
97F60 |
Number theory |
|
|
97F70 |
Measures and units |
|
|
97F80 |
Ratio and proportion, percentages |
|
|
97F90 |
Real life mathematics, practical arithmetic |
|
|
97F99 |
None of the above, but in this section |
