Checking understanding of rounding
Lesson details
Learning outcome
I can round to the nearest 100 or 10 or whole number or to 1 or 2 decimal places.
Key learning points
- Any number can be rounded to the nearest 10, 100 or 1000.
- A number with one or more decimal places can be rounded to the nearest whole number.
- A number with two or more decimal places can be rounded to one decimal place.
- A number with three or more decimal places can be rounded to two decimal places.
Keywords
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
When rounding a number, pupils write the first significant digit(s) only. E.g 36 789 is 4.
The use of the place value table shows the magnitude of the number, thus preserving their place value.
Teacher tip
When beginning discussions about rounding ask the class if they can think of situations, headlines. etc that they believe have used/or would use rounded figures instead of the exact figures. Or, times they have used rounded figures in their everyday lives.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Jun writes 378 as approximately 400. Jun has written it to the hundred.
Q2.Which digit is in the thousands column in 43 978?
Q3.Which digit is in the tens column in 3492?
Q4.In the number 57.392, which column is the 3 in?
Q5.In the number 57.392, which column is the 2 in?
Q6.The number that is halfway between 3 and 4 is
Assessment exit quiz
6 Questions
Q1.Rounding means to change a number into another number that is the same value but is easier to work with.
Q2.13 745 rounded to the nearest thousand is .
Q3.Lucas buys a t-shirt costing £14.75. What is the cost of the t-shirt to the nearest pound?
Q4.Round 178.358 to 1 decimal place.
Q5.Round 17.3095 to 2 decimal places.
Q6.Round 109.3978 to 2 decimal places.
To help you plan your 8 maths lesson on: Checking understanding of rounding, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 8 maths lesson on: Checking understanding of rounding, 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.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
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.