Mathematics
Grade 9
15 min
Precision
Precision
What you'll learn
- Identify the appropriate level of precision needed for a given measurement situation, such as cooking versus construction, with 80% accuracy.
- Solve problems involving measurements by rounding to a specified degree of precision (e.g., nearest tenth, hundredth) and justify the rounding choice.
- Explain the difference between accuracy and precision in measurement, providing real-world examples for each.
- Apply the concept of significant figures to determine the precision of a calculated result derived from multiple measurements, showing all steps of the calculation.
Tutorial Preview
1
How many significant figures are in 10.50 cm?
2
Round the number 12,384 to 3 significant figures.
3
Add and round correctly: 15.2 m + 3.18 m.
Sample Practice Questions
Easy
How many significant figures are in the number 253?
0.1
1.2
2.3
3.4
Easy
How many significant figures are in the measurement 1.05 g?
0.1
1.2
2.3
3.4
Easy
Round the number 87 to 1 significant figure.
0.80
1.87
2.90
3.100
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Frequently asked questions
What grade level is "Precision"?
Precision is a Grade 9 Mathematics lesson on ExcelOS.
What will I learn in Precision?
You'll be able to: Identify the appropriate level of precision needed for a given measurement situation, such as cooking versus construction, with 80% accuracy; Solve problems involving measurements by rounding to a specified degree of precision….
Is "Precision" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Precision?
This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.