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Grade 7 · Math · Unit 1 of 16

Divisibility Rules

Is it divisible?

What your child practises

Using divisibility rules for 2, 3, 4, 5, 6, 8, 9 and 10 without dividing, and why no number can be divided by 0.

Nunavut Curriculum approved guide: Alberta Mathematics K–9 (2007), Number · divisibility rules for 2, 3, 4, 5, 6, 8, 9 and 10, and why a number cannot be divided by 0

How we explain it

Children can open this short lesson before they practise.

  1. 2: the number is even. 5: it ends in 0 or 5. 10: it ends in 0.
  2. 3: the digits add to a multiple of 3. 9: the digits add to a multiple of 9.
  3. No number can be divided by 0.

Example: Is 7 236 divisible by 9? Add the digits: 7 + 2 + 3 + 6 = 18. 18 is a multiple of 9. Answer: Yes

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which digit can replace ■ so that 1■2 is divisible by 9?

    • 9
    • 5
    • 6

  2. Question 2

    Which number is divisible by 6?

    • 634
    • 961
    • 513
    • 534

  3. Question 3

    Is 344 divisible by 4?

    • Yes
    • No

  4. Question 4

    Why can a number not be divided by 0?

    • The answer is always 1
    • The answer is always 0
    • The answer is the number itself
    • No number multiplied by 0 gives a number other than 0, so there is no answer

  5. Question 5

    Which number is divisible by 6?

    • 927
    • 241
    • 90
    • 85

  6. Question 6

    Is 278 divisible by 2?

    • Yes
    • No

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