Mathematics for IGCSE & O level - Using A Calculator (Section 1 - No. 46)
Which of the following can be used to check your answer?
Use some method of estimating as a check
Make sure you've followed the order of operations
Use a completely different method to calculate the same answer
Make sure your calculator is working correctly
ব্যাখ্যা
All options help to ensure the accuracy of your answer.