Mathematics for IGCSE & O level - Using A Calculator (Section 1 - No. 4)
How do you write the number 3.5 x 10^-4 in standard form on your calculator?
Press 3.5, then press the EE key, then press 4, then +/-.
Press 3.5, then press the EE key, then press -4.
Press 3.5, then press the 10^x key, then press -4.
Press 3.5, then press the 10^x key, then press 4, then +/-.
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Enter the number, press the EE key, and then enter the exponent. For negative exponents, press the +/- (change sign) key after the exponent.