DIVISIBILITY RULES

Secret rules to instantly tell if a number divides evenly by 2, 3, 4, 5, 6, 9, or 10.

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CS.N.4.6·Divisibility rules (2, 3, 5, 10)(IV)CS.N.5.1·Concepts of multiple and divisor(V)

Section 1 / 3

RULES FOR 2, 5, AND 10

A number is divisible by 2 if it is even (ends in 0, 2, 4, 6, 8). By 5 if it ends in 0 or 5. By 10 if it ends in 0. These three rules are the easiest to learn!

Is 435 divisible by 5?

1Rule: ends in 0 or 5

2435 ends in 5 > YES!

3435 / 5 = 87

= 87

LEADER TIP

Make it a game: call out numbers and students race to identify which numbers they divide by. Kids love this!

BEFORE THIS LESSON, TRY

Understanding Remainders

PRACTICE WITH THESE GAMES

Division Table

Prime Hunt

Division Quiz

Want more practice? Generate printable worksheets with similar problems.

Go to Worksheets

DIVISIBILITY RULES

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DIVISIBILITY RULES