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http://mathandreadinghelp.org/basic_math_rules.html WebApr 5, 2024 · Examples include 371371 or 552552. Divide the number by 7. Divide it by 11. Divide it by 13. The order in which you do the division is unimportant! The answer is the three-digit number. Examples: 371371 gives you 371 or 552552 gives you 552. A related trick is to take any three-digit number. Multiply it by 7, 11, and 13. ironton truck tool box
13 Classic Mathematics Books for Lifelong Learners - Medium
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