Arithmetic of Computers

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Lesson 4

Practice Makes Perfect

Prowess with powers

Page 139

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Your answer :

2(4²) + 3(4¹) + 2(4⁰) = 46.

Right.

2(4²) + 3(4¹) + 2(4¹) = 2(4 × 4) + 3(4) + 2(1) = 2(16) + 3(4) + 2(1) = 32 + 12 + 2 = 46.

Very well. How about 3(4^− 1)?

Answer :

3(4^− 1) = (1)/(12).

Go to Page 128

3(4^− 1) = (3)/(4).

Go to Page 133

3(4^− 1) = − 12.