IXL | Divisibility rules for numbers up to 100: word problems

Mrs. Hoffman has 26 desks in her classroom. She wants to put the same number of desks in each row with no desks left over. How many rows could Mrs. Hoffman make?

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question

Jordan wants to hang 56 photographs on his bedroom wall. He wants to put the same number of photographs in each row. How many rows could Jordan make?

key idea

A number is divisible by 10 if its ones digit is 0.

A number is divisible by 2 if its ones digit is 0, 2, 4, 6, or 8.

A number is divisible by 5 if its ones digit is 0 or 5.

solution

Which number evenly divides 56? Try each number.

First try the "divisible by 10" rule on 56.

Look at the ones digit:

The ones digit is 6.

The rule says that 56 is not divisible by 10.

Next try the "divisible by 2" rule on 56.

Look at the ones digit:

The ones digit is 6.

The rule says that 56 is divisible by 2.

Finally, try the "divisible by 5" rule on 56.

Look at the ones digit:

The ones digit is 6.

The rule says that 56 is not divisible by 5.

56 is divisible by 2. Jordan could make 2 rows of photographs.

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Lesson: Divisibility rules

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Divisibility rules for numbers up to 100

Lesson: Divisibility rules

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