Starter quiz
- Select all the calculations which have a negative answer.
- ✓
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- ✓
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- Work out: ______
- '24' ✓
- Match each multiplication to the correct product.
- ⇔✓
- ⇔✓
- ⇔✓
- ⇔✓
- ⇔✓
- ⇔✓
- Work out: ______
- '5' ✓
- Select all the correct statements.
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- Work out: ______
- '(-2)' ✓
Exit quiz
- ÷ 10 and × 10 are ______ of each other.
- 'inverses' ✓
- Complete the statement. Dividing by 10 is equivalent to multiplying by ______.
- '0.1' ✓
- Given that the product of 3 and 5 is 15, complete the statement. The product of 0.003 and 500 is __________ 15.
- less than ✓
- equal to
- greater than
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- Which of the following calculations have the decimal point in the correct place?
- 3.5 × 11.8 = 41.3 ✓
- 35 × 1.18 = 4.13
- 0.35 × 1.18 = 4.13
- 3.5 × 1.18 = 4.13 ✓
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- Use the multiples of to work out ______
- '80' ✓
- Use the multiples of to work out ______
- '300' ✓
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Factorising multiples of 10 can scale the calculation to easier values.
- It is important to consider place value so answers are scaled back correctly when multiplying.
- Factorising multiples of 10 is one of the multiplication and division strategies.
Common misconception
That 0.0004 is one thousand times smaller than 4 as there are three zeros after the decimal point.
The use of a place value or Gattegno chart is invaluable here to highlight this misconception . The 4 is in the 10 thousandths column.
Keywords
Product - A product is the result of two or more numbers multiplied together.
Partitioning - Partitioning is the act of splitting an object or value down into smaller parts.
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