Algebra 1/2: An Incremental Development (2nd ed.)
| Authors | Saxon, John H., 1923- |
| Tags | Algebra |
| Publisher | Saxon Publishers |
| Published | 28 feb 1991 |
| Date | 28 set 2022 |
| Languages | eng |
| Identifiers | uri: https://www.archive.org/details/algebra12increme00saxo |
Description
Some divisibility rules/tests (pp. 32, PDF pp. 49):
A whole number is divisible by 2 if its last digit is either 0, 2, 4, 6 or 8.
A whole number is divisible by 10 if its last digit is 0.
A whole number is divisible by 5 if its last digit is either 5 or 0.
A whole number is divisible by 3 if the sum of its digits is divisible by 3.