Abacus 2

Course No. ABA-221

Audience
Students enrolled in the Hadley School for Professional Studies

Course Description
This is the second course in the Abacus series. Abacus 2 explains how to add, subtract, multiply, and divide fractions, as well as work with percents and units of measure. This course also enables you to extract square roots and subtract a larger number from a smaller one.

Available Formats
large print

Organization
five lessons

Credit
2 CEUs

Prerequisites
completion of Abacus 1 and teacher recommendation

Overview
Five assignments are submitted to the instructor.

Grading
letter grades

Maximum Completion Time:
2 ½ months

Objectives and Content

This course is designed to help you solve more complex mathematical problems using the abacus. You can apply your skills to everyday problems like adding and subtracting quantities and making money transactions.

After completing Lesson 1, the student will be able to

reduce fractions
add fractions
subtract fractions

After completing Lesson 2, the student will be able to

multiply fractions
cancel factors
divide fractions

After completing Lesson 3, the student will be able to

find percents
use units of measure in mathematical operations

After completing Lesson 4, the student will be able to

extract square roots of whole and decimal numbers that are perfect squares
extract square roots of whole numbers that are not perfect squares

After completing Lesson 5, the student will be able to

identify complementary numbers, active numbers, and inactive numbers
subtract a larger number from a smaller one
subtract a series of numbers

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