Rounding integers to significant figures
I can round integers to a required number of significant figures.
Rounding integers to significant figures
I can round integers to a required number of significant figures.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The first non-zero digit of a number is the first significant figure.
- Once the first significant figure is identified you can find any significant figure.
- It is important to know when zeros are and are not significant when rounding integers.
- Integers can be rounded to any number of significant figures.
Keywords
Significant figures - Significant figures are the digits in a number that contribute to the accuracy of the number. The first significant figure is the first non-zero digit.
Round - To change a number into another number that is approximately the same value but is easier to work with. E.g. round 561 to the nearest 10 is 560.
Common misconception
Assuming all zero digits are not significant.
Designing questions that contain zero digits in a variety of positions.
To help you plan your year 8 maths lesson on: Rounding integers to significant figures, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 maths lesson on: Rounding integers to significant figures, 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.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 3 maths lessons from the Estimation and rounding unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
356 268 -
four hundred thousand
42.689 -
forty
449.09 -
four hundred
3 591 054 -
four million
3560 -
four thousand
Exit quiz
6 Questions
5094 -
4 is the fourth significant figure
50 904 -
4 is the fifth significant figure
509 004 -
4 is the sixth significant figure
954 000 -
4 is the third significant figure
4 050 090 -
4 is the first significant figure