Chapter 4

Question 1

Ch 4

Describe the parts of a fraction and what they are called.

Answer 1

The denominator is the total number of parts dividing the whole.
The numerator is the number of parts you are talking about.

5 of them are in action.

5/6 Object is divided into 6 equal parts.

Question 2

Ch 4

Express a whole number as a fraction

Answer 2

Write it over 1

42 = 42/1

Question 3

Ch 4

Express a fraction as equal to one.

Answer 3

Same number in numerator and in denominator.

37/37 =1

Question 4

Ch 4

Determine if a number is an improper fraction.

Answer 4

It’s an improper fraction if the numerator is greater than the denominator.

Question 5

Ch 4

Simplify an improper fraction

Answer 5

Divide the numerator by the denominator. Express it as your whole number answer with the remainder as the numerator over the original denominator. (You might have to reduce it further.)

86/25 = 3 11/25

Question 6

Convert mixed number to improper fraction.

Answer 6

Multiply whole number by the denominator. Add that answer to get the new numerator over the same denominator.

8 5/6 is 8 x 6 + 5 = 53/6

Question 7

Ch 4

Express a fraction as a decimal

Answer 7

Divide the numerator by the denominator.

2/5 =2 divided by 5 = .4

Question 8

Ch 4

Divide fractions

Answer 8

1. Convert mixed numbers to an improper fraction.
2. Invert the divisor (number after division sign)
3. Multiply the numerators.
4. Multiply the denominators.
5. Reduce fraction to simplest terms.

3/4 divided by 1/2 = 3/4 x 2/1 = 6/4 =1.5

Question 9

Ch 4

Apply properties of numbers to multiplying fractions

Answer 9

If the same number will go into the numerator and denominator you can “slash” them by dividing that number into top and bottom.

75/26 x 13/25 can be “slashed” by dividing by 25. 3/26 x 13/1 = 39/26

Question 10

Ch 4

Convert money to a fraction.

Answer 10

Money is always parts of 100. The whole is 100 and the cents are the numerator.

$.65 = 65/100 = 13/20

Question 11

Ch 4

Multiply decimals

Answer 11

Maintain a placeholder for all decimal positions. When multiplying by the numeral in the tenths position hold the unit spot with a 0, hundreths with two 0’s, etc. The decimal place in the final answer must be over the same number of decimal places used when multiplying.

(.47 x .526) Line 1 is 3682 |Line 2 is 21040. 5 decimal places. .24722