Explain the relationship between multiplying a number by 100 and multiples of 100
I can explain the relationship between multiplying a number by 100 and multiples of 100
- Year 4
Explain the relationship between multiplying a number by 100 and multiples of 100
I can explain the relationship between multiplying a number by 100 and multiples of 100
Lesson details
Key learning points
- Finding one hundred times as many is the same as multiplying by 100
- When a number is multiplied by one hundred the product is a multiple of one hundred.
- Multiples of 100 have zero in the tens and ones column.
- Multiplying by one hundred moves all the digits two columns to the left making the digits one hundred times the size.
Keywords
Multiple - A multiple is the result of multiplying a number by another whole number.
Digit - A digit is one of the symbols of a number system. In our number system we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9
Placeholder - A placeholder is where we use the digit zero to hold a place in a number and maintain place value.
Common misconception
Pupils may start talking of 'adding 2 zeros' to multiply by 100
Don't dismiss this as it is disguising an understanding of a pattern but reassure the pupils that this will be explained later through place value discussions in the coming lessons.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What number is being shown on the Gattegno chart?
