Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Test your understanding with targeted questions related to the topic.
Question 1
Easy
How many significant figures are in 0.00230?
💡 Hint: Count the non-zero digits and the trailing zero.
Question 2
Easy
Round the number 3.146 to two decimal places.
💡 Hint: Look at the third decimal place to decide how to round.
Practice 4 more questions and get performance evaluation
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
How many significant figures are in the number 0.0405?
💡 Hint: Remember leading zeros do not count.
Question 2
When adding 2.25 and 3.1, what should the final answer be rounded to?
💡 Hint: Look at the decimal places of both numbers.
Solve 1 more question and get performance evaluation
Push your limits with challenges.
Question 1
Calculate the area of a rectangle where the length is 3.25 m and the width is 2.5 m. Report with significant figures.
💡 Hint: Area is calculated by multiplication; watch how the significant figures limit your answer.
Question 2
When mixed, a solution contains 500 mL of 2.5 M NaCl and 200 mL of 1.0 M NaCl. What is the final concentration?
Provide the answer with correct significant figures.
💡 Hint: Remember to use the correct units and significant figures through your calculations.
Challenge and get performance evaluation