Explain the removal of placeholders when dividing whole numbers by 100
I can use place value to explain removing the final 2 zeros from a multiple of 100 when we divide by 100
Explain the removal of placeholders when dividing whole numbers by 100
I can use place value to explain removing the final 2 zeros from a multiple of 100 when we divide by 100
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Dividing by one hundred moves all the digits two columns to the right making them one hundredth times the size.
- Multiples of 100 have zero in the tens and ones column.
- If you divide a multiple of 100 by 100, digits move two places right and the zeros in the ones and tens disappear.
Keywords
Scaling - Scaling is when a given quantity is made ___ times the size.
Inverse - Inverse means the opposite in effect. The reverse of.
Magnitude - A placeholder is where we use the digit zero to hold a place in a number and maintain place value.
Placeholder - The magnitude of a number is its distance from zero.
Common misconception
Many pupils believe that 'subtracting 2 zeros' is dividing by 100 which can lead to difficulties later on when they are introduced to decimal numbers.
Don't dismiss it. It's a pattern that has been spotted and generalised. Do encourage the children to work with physical resources that don't involve the numbers themselves so they can see that it's not subtracting 2 zeros but changing place value.
To help you plan your year 4 maths lesson on: Explain the removal of placeholders when dividing whole numbers by 100, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 4 maths lesson on: Explain the removal of placeholders when dividing whole numbers by 100, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Explore more key stage 2 maths lessons from the Understand what happens when a number is multiplied or divided by 10 and 100 unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
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Starter quiz
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Exit quiz
6 Questions
