Tests for Divisibility
Is 38 divisible by 2? By 4? By 5? Instead of dividing every time, discover clever shortcut rules that let you check divisibility at a glance! Master rules for 2, 3, 4, 5, 6, 8, 9, 10 & 11.
Ch. 3. Playing with Numbers 3.4. Tests for Divisibility 3.4. Medium
Instructions
- 🔬 Pattern Lab: Feed numbers into the Divisibility Machine! Discover the secret shortcut rule for each divisor — look at last digits, digit sums, and more. Each rule unlocks like a discovery.
- 🔎 Number Analyzer: Given a number, determine ALL divisors from the set 11. Apply every rule you learned and build a complete divisibility profile!
- ⚡ Divisibility Dash: Numbers and divisors fly at you — is it divisible or not? Think fast! Streak bonuses for consecutive correct answers. Beat the clock!