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Basic Math (Arithmetic)

Educator Edition

Portland Community College
MTH 20, Basic Math (Arithmetic). Covers fractions, decimals, percents, integers, and measurements to write, manipulate, interpret, and solve application and formula problems. Explores some measures of central tendency. A scientific calculator is required. The TI-30X II is recommended.

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Intended Outcomes

Upon completion of the course students should be able to:

  • Choose and perform accurate arithmetic computations in a variety of situations with and without a calculator.
  • Creatively and confidently apply mathematical problem solving strategies.

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This problem series includes WeBWorK-enhanced problems. WeBWorK problems are highly sophisticated, supporting the representation and manipulation of mathematical objects such as vectors, points, matrices, intervals, and complex numbers, with customizable answer checkers. Students are encouraged to make multiple attempts until they succeed, and given immediate feedback on correctness.

Edfinity provides full access to the WeBWorK Open Public Library (OPL), a collection of over 20,000 rich, interactive problems across a wide range of math and science subjects, including college algebra, discrete mathematics, probability and statistics, single and multivariable calculus, differential equations, linear algebra and complex analysis.

Problem Sets

  1. Exponents And Rounding Whole Numbers
  2. Multiplication
  3. Division
  4. Geometry Basics
  5. Divisibility Test
  6. Prime Numbers
  7. Gcf And Lcm
  8. Order Of Operations 1
  9. Integers And Absolute Value
  10. Add Subtract Integers
  11. Multiply Divide Integers
  12. Order Of Operations 2
  13. Fraction Definition
  14. Add Subtract Fractions
  15. Multiply Fractions
  16. Divide Fractions
  17. Mixed Number Definition
  18. Add Subtract Mixed Numbers
  19. Multiply Divide Mixed Numbers
  20. Order Of Operations 3
  21. Decimal Definition
  22. Decimal Addition Subtraction
  23. Decimal Multiplication Division
  24. Decimal And Fraction
  25. Square Root
  26. Mean Median Mode
  27. Rate And Ratio
  28. Proportion
  29. Unit Conversion
  30. Percent Definition
  31. Percent Formula
  32. Percent Word Problem
  33. Percent Of Increase Decrease


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