Answers for Ch 4 Review through Chapter 5.5

1. fraction
A ___________ describes the number of equal parts of a whole.
fraction bar
In a fraction, the number above the ________ ______ is called
numerator
the ___________, and the number below is called the
denominator
_______________.
If the numerator of a fraction is less than its denominator, the
proper fraction
fraction is called a _________ __________. If the numerator of a
fraction is greater than or equal to its denominator, the fraction is
called an __________ __________.
improper fraction

2. form of 1
equivalent
Two fractions are __________ if they represent the same number.
Equivalent fractions
____________ ___________ represent the same portion of a whole.
build a fraction
simplest form lowest terms
A fraction is in _________ _______ , or _______ _____ , when the
numerator and denominator have no common factors other than 1.
Algebraic
_________ fractions are simplified and built up just like numerical
fractions.

3. To multiply two fractions , multiply the numerators and multiply the
__________________
denominators. Simplify the result, if possible.
fraction is followed by the word of
When a ______________________________, it indicates that we are
to find a part of some quantity using multiplication.
area
One number is the ___________ of another if their product is 1.
reciprocal
reciprocal invert
To find the ___________ of a fraction, _______ the numerator and
denominator.

4. • Simplify each fraction, if possible.

5. • Multiply and Simplify.

6. • Exponential Expressions

9. round a decimal
To _______________ to a certain decimal place value, locate the
rounding digit in that place.
Look at the test digit directly to the right of the rounding digit.
________
If the test digit is __________ , round up. If it is 4 or less, round down
5 or greater
by keeping the rounding digit and dropping all the digits to its right.

10. Round 3,706.0815 to the nearest thousandth.
Round -0.0614 to the nearest tenth.
Round 11.314964 to the nearest ten-thousandth.

11. Add: 15.82 + 19 + 32.995.
Write the problem in vertical form and add, column by
column, working right to left.
Subtract: 8.4 – 3.029.

12. Use the same rules that are used for adding and
subtracting integers.
Add: -21.35 + (-64.52).
Subtract: -8.62 - (-1.4).

13. Line up the numbers and multiply like whole numbers.
Move the decimal point in the product the number of
decimal places in both factors.

14. Line up the numbers and multiply like whole numbers
and follow the rules for multiplying signed integers.
Move the decimal point in the product the number of
decimal places in both factors.

15. The base of an exponential expression can be a
positive or negative decimal.

16. To divide with a decimal divisor:
1. Write the problem in long
division form.
2. Move the decimal point of
the divisor so that it becomes
a whole number.
3. Move the decimal point of
the dividend the same
number of places to the right.
4. Write a decimal point in the
quotient directly above the
decimal point in the dividend.

17. Use the rules for dividing integers.

18. Use the rules for order of operations to evaluate
________________
expressions and formulas.

19. divide
To write a fraction as a decimal, _______ the
numerator of the fraction by its denominator.

20. If the division process never gives a remainder of zero
(____________), we call the resulting decimal a
terminating
repeating
_________ or non-terminating___ decimal.

21. To write a mixed number in decimal form, we need
only find the decimal equivalent for the fractional part
of the mixed number.

22. Write the fraction in its equivalent decimal form.

23. To evaluate expressions that can contain both fractions
and decimals, we can work in terms of decimals or in
terms of fractions.

24. Page 510
#1, 3, 4, 8, 113, 114, 115, 116
1. equivalent 3. terminating 4. repeating 8. terminating 113-116. Discuss as a class
Page 546
# 75-94 (all)