Starter quiz
Which factor is missing from the factor bug?- '3' ✓
- What number has only the following factors: 1, 2, 11, 22
- '22' ✓
Which factor is missing from the factor bug?- '5' ✓
- Which of these is the correct full list of factors of 26?
- 1, 2, 6, 10, 13, 26
- 2, 13
- 1, 2, 13, 26 ✓
- 1, 2, 4, 13, 6.5, 26
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- What is the missing factor of 54 from this list? 1, 2, 3, 6, 18, 27, 54
- '9' ✓
- What is the missing factor of 69 from this list? 1, 23, 69
- '3' ✓
Exit quiz
Which multiplication is shown by this array?- 4 × 4 =
- 4 × 1 =
- 2 × 4 =
- 2 × 2 = ✓
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What square number is represented by this incomplete factor bug?- '36' ✓
- Tick the square numbers.
- 16 ✓
- 48
- 81 ✓
- 110
- 200
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- Tick the lists which show factors of a square number.
- 1, 3, 9 ✓
- 1, 2, 3, 4, 6, 8, 12, 24
- 1, 2, 3, 4, 6, 9, 12, 18, 36 ✓
- 1, 2, 5, 10, 25, 50
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- Match the expression to the correct square number.
- 3⇔9 ✓
- 7⇔49 ✓
- 1⇔1 ✓
- 4⇔16 ✓
- Complete the missing square number from this list: 1, 4, 9, ______, 25
- '16' ✓
Worksheet
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Presentation
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Lesson Details
Key learning points
- A square number has an odd number of factors.
- A square number is the product of multiplying a number by itself.
Common misconception
Pupils record the number of factors for a square number as even as they record the same number twice when writing down the factors of the square arrangement.
Highlight the need to only record each number as a factor once. You may like to record this on the tail of the factor bug to help emphasise this.
Keywords
Factor - Factors are whole numbers which exactly divide another whole number.
Square number - A square number is the result of multiplying an integer (not a fraction) by itself.
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