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Entering numbers in scientific notation

Ti -30X IIB. Entering numbers in scientific notation. EE. Ex: 2.56 x 10 6 Enter the number 2.56 then press 2nd key Then press x -1 key (you are actually selecting the “EE” function of this key) Then enter the number 6 If the exponent is negative, as in 10 -5 , in step 4: enter (-) 5.

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Entering numbers in scientific notation

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  1. Ti -30X IIB Entering numbers in scientific notation EE Ex: 2.56 x 106 Enter the number 2.56 then press 2nd key Then press x-1 key (you are actually selecting the “EE” function of this key) Then enter the number 6 If the exponent is negative, as in 10-5 , in step 4: enter (-) 5

  2. Ti -30X IIB Scientific versus “normal” notation SCI/ENG Show a “normal” or FLO (ex: 12345) number in scientific (SCI) notation (ex: 1.2345 x 104) and vice versa: Adjust display: Press 2nd key Press DRG key You are selecting the “SCI/ENG” function of that key. Use < or > key to move from FLO to SCI or back (see display) Press = key

  3. Ti -30X IIB Multiplying 2 numbers that are in scientific notation EE Ex: 2.56 x 106 x 4.39 x 10-3 Enter the number 2.56 Press 2nd key Press the x-1 key (EE function) Then enter the number 6 Press x Enter the number 2.39 Then press 2nd key Press x-1 key (EE function) Press key (-) then the number 3 Press = EE Answer shown should be: 11238.4 (Normal, FLO notation) or 1.12384 x104

  4. Casio fx-260 Entering numbers in scientific notation • Ex: 2.56 x 106 • Enter the number 2.56 • Then press EXP key • Then enter the number 6 • Press = • If the power of 10 (= exponent) is negative as in: 2.56 x 10-4 • After pressing the EXP key, press +/- key, then enter the number 4.

  5. Casio fx-260 Scientific versus “normal” notation Display a “normal” (ex: 12345) number in scientific notation (ex: 1.2345 x 104) and vice versa: A) To get to scientific notation: Press MODE key Press 8 key twice You are in scientific notation, a small SCI shows in the window B) To get back to normal notation: Press MODE key Press 9 key The SCI disappears.

  6. Casio fx-260 Multiplying 2 numbers that are in scientific notation • Ex: 2.56 x 106 x 4.39 x 10-3 • Enter the number 2.56 • Then press EXP key • Then enter the number 6 • Press X • Enter the number 4.39 • Then press EXP key • Then enter the (+/-) key, then number 3 • Press = Answer shown should be: 11238.4 (Normal mode) or 1.12384 04

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