Arithmetic of Computers

Arithmetic of Computers

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Self-Test Questions : Lesson 5

Coefficients

New names for old
 
1.
In 4(32) + 8(31) + 6(30), what are the coefficients, what are the exponents and what are the base numbers?

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2.
Find the sums of:
a. 5(103) + 3(102) + 8(101) + 6(100) = 
b. 0(103) + 6(102) + 0(101) + 0(100) = 
c. 8(103) + 1(102) + 1(101) + 4(100) = 

Go to Page 158

3.
a. In the decimal number 438, what is the coefficient of 102?
b. In 638, what is the coefficient of 100?
c. In 5,279, what is the coefficient of 101?
d. In 6,436, what is the coefficient of 103?

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4.
How do you know which power of ten 4 multiplies in the number 649?

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5.
What is the coefficient of
a. 10 − 1 in 398.45?
b. 10 − 2 in 49.60?
c. 10 − 1 in 648?
d. 10 − 3 in 1.59834?

Go to Page 171

6.
Which of these expressions could be the expanded form of a decimal number? Write the decimal numbers.
a. 1(410) + 5(610) + 3(210)
b. 0(102) + 0(101) + 1(100) + 8(10 − 1)
c. 1(101) + 2(102) + 6(103)
d. 4(102) + 9(101) + 0(100) + 0(10 − 1)

Go to Page 156

In Lesson 5 you learned how coefficients are used to write decimal numbers. Coefficients, however, are not exclusively the property of the decimal system - as you will soon see.
Turn to Lesson 6 beginning on Page 178.

Go to Lesson 6

 

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