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Unformatted text preview: gets smaller ◆ Change 2.99 x 10 8 ◆ Change 4.87 x 103 Using your calculator ◆ EE and EXP button stand for x 10 to the ◆ 4.5 x 104 ◆ push 4.5 ◆ push either EXP or EE ◆ push 4 +/ or 4 ◆ see what your display says. Practice these problems ◆ (4.8 x 10 5 ) x (6.7 x 106 ) ◆ (6.8 x 10 6 ) (3.2 x 10 4 ) ◆ Remember when you multiply you add exponents ◆ 10 6 x 104 ◆ When you divide you subtract exponents. Adding and Subtracting ◆ You can’t add or subtract numbers until they are to the same power of ten. ◆ Your calculator does this automatically. ◆ (4.8 x 10 5 ) + (6.7 x 10 6 ) ◆ (6.8 x 10 6 ) (3.2 x 105 ) ◆ Remember standard form starts with a number between 1 and 10 to start. PEMDAS ( 29 ( 29 ( 29 3 3 4 2.4 10 4.8 10 1.2 10× × = × ( 29 ( 29 ( 29 3 4 3 4.8 10 1.2 10 2.4 10× = × × PEMDAS ( 29 ( 29 ( 29 3 3 4 2.4 10 4.8 10 1.2 10× × = × ( 29 ( 29 ( 29 3 4 3 4.8 10 1.2 10 2.4 10× = × ×...
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This document was uploaded on 02/06/2011.
 Spring '08
 Electron, Mole

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