Year 8
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
These resources were created for remote use during the pandemic and are not designed for classroom teaching.
Lesson details
Key learning points
- In this lesson, we will learn how to round decimal numbers to a given significant figure.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
Loading...
6 Questions
Q1.
What does degree of accuracy mean?
How long a measurement is
How many decimal points in a number
Measurements only rounded to a given significant figure
Q2.
How many significant figures does 0.0045 have?
1 s.f.
4 s.f.
5 s.f.
Q3.
How many significant figures does 5610 have?
2 s.f.
4 s.f.
Q4.
Rounding 405.3 to the nearest integer is the same as rounding to ________ significant figures.
1 s.f
2 s.f
4 s.f
Q5.
Round 7906 to 3 s.f.
7900
7916
8000
Q6.
What does significant figure tell us?
How many non-zero digit in a number
Significant figure tell us how many numbers after the decimal point
6 Questions
Q1.
Round 0.0078 to 1 s.f.
0.008
1
1.0000
Q2.
Using a calculator or otherwise, work out the volume of a cube with length 6.5cm. Give your answer to 3 significant figures.
270
274
275.000
Q3.
Find the area of a rectangle with a base of 9.8 cm and a height of 4.8 cm. Give your answer to 3 s.f.
47
47.04
470
Q4.
Round 13490 to 2 s.f.
13
13.000
13400
Q5.
Calculate √45 correct to 3 s.f.
6.70
6.700
6.708
Q6.
Use your calculator to work out the value of:
4
4.0
5.0