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This calculator does not include a dedicated tax calculation function. Users will need to manually calculate tax amounts using the basic arithmetic functions, which may require additional time and effort for shopping or managing household finances.

This calculator does not feature a memory function for storing and recalling numerical values. Users will need to manually keep track of intermediate calculation results, which may complicate multi-step calculations and reduce efficiency.

One of the calculators includes a square root calculation function, which is useful for calculations in DIY projects or schoolwork where square roots are required. This eliminates the need to manually calculate square roots or use external tools for some users.

This calculator includes a percentage calculation function, which simplifies calculating discounts, profit margins, and other percentage-related tasks. This is useful for shopping and analyzing sales data, avoiding the need for complex manual calculations for most users.

This calculator does not have a sign change function to quickly switch the sign of a number from positive to negative or vice versa. Users will need to manually handle sign changes, which may complicate calculations involving debits, credits, or temperature changes.

This calculator does not offer a decimal place setting function. The calculator displays results with a fixed number of decimal places, which may not be ideal when you want to avoid displaying unnecessary digits for specific calculations.