fx-82MS fx-82TL fx-9860GII TI-83
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On a TI calculator you can add
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Example 1
To calculate 6 + 3 × 5 = 21
6 + 3 × 5 ENTER 6+3∗5 21
Example 2
To calculate 2 + − 1 = 1
2 + (–) 1 ENTER 2+-1 1
Exemple 3
To calculate 
1 ÷ 2 + 1 · 6 ENTER 1/2+1.6 2.1
Exemple 4
To calculate (4 + 1i) + (2 + 3i) = 6 + 4i
i : i : 4 + 2nd • + 2 + 3 2nd • ENTER 4+i+2+3i 6+4i
Be sure to select the number mode setting a+bi.