Math 318
Name
Assume that a, b, c >0 and that a <b <c. Insert the correct symbol
(>, <, or =) in each blank space. Also, for problems 14, 18, 30, and 32,
explain your reasoning. You must use the kinds of reasoning we have used in
class.
1.
c
a+b+c
2.
c+17
Math 318 Homework
Name:
Without actually doing the calculations indicated, use your number
sense to determine where the decimal point should be in the answer. Then
place the point there.
1. 52.325 2.182 = 11417315
2. .3456 301.25 = 104112
3. 25.124 .985 =
Math 318
Percent Practice Problems
Name
Use grids to solve these problems. Two grids are provided for each problem. Make sure it is clear how
you are using the grids to solve the problems.
1. Kathy bought a book that was marked down 17% from its original
Math 318
Proportional Reasoning HW
Name
Use non-standard methods (proportional reasoning) to solve these. Do not
use algorithms. Use methods that can be understood by a 3rd or 4th grader
with strong number sense. When possible (if the numbers are nice eno
Math 318 Homework
Name:
Use 10 by 10 grids to solve these problems.
1. What is 35% of 80?
2. What is 61% of 240?
3. What is 106% of 42?
4. What is 79% of 450?
5. What is 242% of 180?
6. 12 is 20% of what?
7. 36 is 30% of what?
8. 256 is 80% of what?
9. 20
Math 318 Homework
Name:
Use 10 by 10 grids to solve these problems. You must clearly show how you
are using the grids to solve each problem. You must do all of the problems,
but you will be graded on 1 problem in problems 1 - 5, 2 problems in problems 6 -