Study Guides

Unit Summary

In this unit pupils will explain the relationship between multiples of 3 and of 6. They will use this relationship and tests of divisibility for the 3- and 6-times tables to solve problems.

Lesson Summary

You know the divisibility rule for multiples of 3 and can use it with 3- and 4-digit numbers.

Key Notes

• Numbers that can be divided by 3 and leave no remainder are divisible by 3
• To find the digit sum of a number, add the digits in the number together so the digit sum of 17 is 1 + 7 which equals 8
• For a number to be divisible by three, the dgit sum of the number must be a divisible by 3

Vocabulary To Learn

• Digit sum: The sum of the digits of a number is called its digit sum.
• Divisible / Divisibility: Divisibility is when division of a number results in another whole number. A number is divisible by another if it can be shared exactly with no remainder.
• Multiple: A multiple is the result of multiplying a number by another whole number.

Common Mistakes To Avoid

• Lack of understanding of key terms such as: 'digit,' 'number.'

3 Quick Questions (With Answers)

More Lessons In This Unit

• Explain the relationship between multiples of three and six Study Guide
• Use divisibility rules for multiples of 6 Study Guide
• Use knowledge of the 3 and 6 times tables to solve problems Study Guide
• Use knowledge of the relationships between the 3 and 6 times tables to solve problems Study Guide