Some do. I know for a fact that the TI-84+ SE has a rounding feature. Smaller, "pocket" calculators probably don't.
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Use the float feature found on the mode button. Press mode and then select a number next to FLOAT. If FLOAT is selected, the calculator will not round. Selecting a number next to float will round to that many decimal places.
You can't round on a calculator. You do it in your head. 4-1, you round down, 5-9, you round up.
Some calculators have a "x10x" button.
This isn't an exact root. Just calculate the square root on your calculator, and round it to the desired accuracy.This isn't an exact root. Just calculate the square root on your calculator, and round it to the desired accuracy.This isn't an exact root. Just calculate the square root on your calculator, and round it to the desired accuracy.This isn't an exact root. Just calculate the square root on your calculator, and round it to the desired accuracy.
if u have a regular calculator, you cannot put y =, if u have a graphing calculator, then you press the "y =" button