QR Calculator Technique and Time Management

This final lesson focuses on the practical skills that separate good QR scores from excellent ones: efficient use of the on-screen calculator and strategic time management across the 9 data sets. Mastering these skills turns mathematical knowledge into marks under exam conditions.

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The UCAT On-Screen Calculator

Layout and Functions

The UCAT calculator is a basic on-screen calculator with the following features:

Button	Function
0-9, decimal point	Number entry
+, −, ×, ÷	Basic operations
=	Execute calculation
C / CE	Clear current entry / Clear all
M+, M−, MR, MC	Memory: add to memory, subtract from memory, recall memory, clear memory
√	Square root
%	Percentage (usage varies — test it in practice)
+/−	Change sign (positive to negative and vice versa)

Key Limitations