Evaluate the expression without using a calculator.

8 · 63

A. 484

B. 494

C. 504

D. 638

Multiply: 8*63. You might break up that 63 into two parts: 60 and 3.

Now multiply 8 times 60 and 8 times 3, separately, and then add together the two products:

8*60 = 480

8 * 3 = 24

Sum: 504

This is a good example of mental math, where you use math tricks to do calculations without a calculator.