IXL | Divisibility rules: word problems

Paula is arranging bottles of nail polish on her dresser. She has 85 bottles and she wants to arrange the bottles so that there are the same number of bottles in each row. How many bottles of nail polish could Paula put in each row?

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question

Farmer Richard collected 55 eggs to sell. He will sell the eggs in baskets. He wants to put the same number of eggs in each basket without any eggs left over. How many eggs could Farmer Richard put in each basket?

key idea

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

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

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

solution

Which number evenly divides 55? Try each number.

First try the "divisible by 5" rule on 55.

Look at the ones digit:

The ones digit is 5.

The rule says that 55 is divisible by 5.

Next try the "divisible by 2" rule on 55.

Look at the ones digit:

The ones digit is 5.

The rule says that 55 is not divisible by 2.

Finally, try the "divisible by 10" rule on 55.

Look at the ones digit:

The ones digit is 5.

The rule says that 55 is not divisible by 10.

55 is divisible by 5. Farmer Richard could put 5 eggs in each basket.

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Lesson: Divisibility rules

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Lesson: Divisibility rules

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