⭐ COUPON: SALE2020 ⭐ 20% OFF ON ALL WORKBOOKS*3 DAYS FREE SHIPPING ⭐ FREE RETURNS ⭐

Fail to load the data
0

The abacus may not look more like a toy than math tool at first glance, but it’s a powerful calculator that’s been around for a long time!!

What is an abacus?

An abacus is a wooden frame with rows and columns of beads. The beads can be moved to help with addition, subtraction and multiplication. The abacus was useful to mathematicians long before computers and calculators existed.

 

When was the first abacus made?

The abacus is so old we don’t know exactly who invented it! Historians have found evidence of abacus use dating as far back as 2700 BC. Some for of the early abacus was used around the world in many places including China, Mesopotamia, Egypt, Greece, Rome and Persia.

 

Why was the abacus invented?

 


The abacus was used as a computation tool long before we had the technology to make modern day calculators. The abacus not only pre-dates calculators, it also pre-dates paper! Imagine trying to solve a long multiplication problem without a pencil and paper. The abacus helped students and mathematicians keep numbers organized while working. Before the abacus people were forced to count their fingers and toes, groups of rocks and stones or to simply make scratch marks in the dirt.

Is the abacus still used today?

Yes! The abacus is still used today. You may as yourself, why – if we have papers, pencils, calculators and complex computers why would anyone want to use an abacus? Remind yourself that in some parts of the world technology is hard to come by and paper is scarce. The abacus is a valuable tool to students and teachers in these areas. Some teachers in all parts of the world even choose to share the abacus with their students as a hands-on approach to understanding how numbers work.


The abacus can also be a very helpful tool for students who are blind or have other disabilities that may make using a traditional paper and pencil or calculator method more difficult for them.

How does the abacus work?

If you want to learn to use the abacus it’s important to know that there are several different kinds of abacuses around the world today.

The classical abacus is also known as the Chinese abacus. It has 5 beads on the bottom of each column and 2 beads on the top. The Modern abacus has 4 beads on the bottom of each column and 2 beads on the top.

5th Grade Common Core Math: Daily Practice Workbook Part I: Multiple Choice
$14.99
This book is your comprehensive workbook for 5th Grade Common Core Math. By practicing and mastering this entire workbook, your child will become very familiar and comfortable with the state math exam and common core standards. This 5th Grade Common Core Math Workbook (Multiple Choice) includes: 20 Weeks of Daily Multiple Choice Weekly Assessments State Aligned Common Core Curriculum End of Year Assessment This book has the following topics covered: Week 1 - Place value Week 2 - Expanded form vs standard form Week 3 - Rounding numbers Week 4 - Decimals Week 5 - Converting phrases into algebraic expressions Week 6 - Comparing number patterns Week 7 - Fractions Week 8 - Fraction word problems Week 9 - Division problems Week 10 - Multiplying fractions by whole numbers Week 11 - Understanding products based on factors Week 12 - Real world word problems Week 13 - Working with unit fractions Week 14 - Converting units Week 15 - Understanding dot plots Week 16 - Volume of three-dimensional shapes Week 17 - Volume (continued) Week 18 - Volume word problems Week 19 - Graphing points on a coordinate plane Week 20 - Understanding characteristics of shapes End of Year Assessment For practice with Free Response questions, be sure to check out Part II of our workbook titled: 5th Grade Common Core Math: Daily Practice Workbook - Part II: Free Response | 1000+ Practice Questions and Video Explanations Each question is labeled with the specific common core standard so both parents and teachers can use this workbook for their student(s). This workbook takes the Common Core State Standards and divides them up among 20 weeks. By working on these problems on a daily basis, students will be able to (1) find any deficiencies in their understanding and/or practice of math and (2) have small successes each day that will build competence and confidence in their abilities.
Workbooks
Workbooks
2nd Grade Common Core Math: Daily Practice Workbook Part I: Multiple Choice
$14.99
By practicing and mastering this entire 2nd grade math workbook, your child will become very familiar and comfortable with the state math exam and common core standards. This 2nd Grade Math Workbook (Multiple Choice) includes: 20 Weeks of Daily Multiple Choice Weekly Assessments State Aligned Common Core Curriculum End of Year Assessment This book has the following topics covered: Week 1 - Reading and writing numbers using standard form Week 2 - Comparing numbers to find which is greater or less than another number Week 3 - Adding single digit numbers Week 4 - Subtracting single digit numbers Week 5 - Even and Odd numbers Week 6 - Using addition and subtraction to solve problems Week 7 - Adding and subtracting larger numbers from tables and models Week 8 - Understanding place value to add and subtract large numbers Week 9 - Finding different ways to add and subtract numbers Week 10 - Reviewing what we know from weeks 1-9 Middle Year Assessment Week 11 - Measuring objects using a ruler Week 12 - Solving problems using measurement Week 13 - Using number lines and number charts to find missing numbers Week 14 - Telling and writing time using clocks Week 15 - Counting money Week 16 - Solving problems using line plots Week 17 - Solving problems using pictograms and bar models Week 18 - Counting the number of sides and angles in shapes Week 19 - Counting squares and finding equal parts of a shape Week 20 - Reviewing what we know from weeks 11-19 End of Year Assessment For practice with Free Response questions, be sure to check out Part II of our workbook titled: 2nd Grade Common Core Math: Daily Practice Workbook - Part II: Free-Response | 1000+ Practice Questions and Video Explanations | Argo Brothers Each question is labeled with the specific common core standard so both parents and teachers can use this workbook for their student(s). This workbook takes the Common Core State Standards and divides them up among 20 weeks. By working on these problems on a daily basis, students will be able to (1) find any deficiencies in their understanding and/or practice of math and (2) have small successes each day that will build competence and confidence in their abilities.
Workbooks
Workbooks
3rd Grade Common Core Math: Daily Practice Workbook Part I: Multiple Choice
$14.99
This book is your comprehensive workbook for 3rd Grade Math. By practicing and mastering this entire workbook, your child will become very familiar and comfortable with the state math exam and common core standards. This 3rd Grade Common Core Math Workbook (Multiple Choice) includes: 20 Weeks of Daily Multiple Choice Weekly Assessments State Aligned Common Core Curriculum End of Year Assessment This book has the following topics covered: Week 1 - Place value & rounding Week 2 - Adding & subtracting whole numbers up to 1,000 Week 3 - Multiplication Week 4 - Multiplication & Division Week 5 - Re-writing multiplication sentences as division and vice versa Week 6 - Commutative, associative, and distributive properties Week 7 - Real-world word problems Week 8 - Multi-step word problems Week 9 - Fractions Week 10 - Placing fractions on a number line Week 11 - Comparing and ordering fractions Week 12 - Telling time Week 13 - Measurement Week 14 - Bar graphs and pictographs Week 15 - Measuring lengths & understanding line plots Week 16 - Area Week 17 - Real-world word problems Week 18 - Area and perimeter Week 19 - Characteristics of shapes Week 20 - Fractions and shapes End of Year Assessment For practice with Free Response questions, be sure to check out Part II of our workbook titled: 3rd Grade Common Core Math: Daily Practice Workbook - Part II: Free Response | 1000+ Practice Questions and Video Explanations Each question is labeled with the specific common core standard so both parents and teachers can use this workbook for their student(s). This workbook takes the Common Core State Standards and divides them up among 20 weeks. By working on these problems on a daily basis, students will be able to (1) find any deficiencies in their understanding and/or practice of math and (2) have small successes each day that will build competence and confidence in their abilities.
Workbooks
Workbooks

What do the abacus beads mean?

The upper beads of the abacus are called the heavenly beads and the lower beads are called the earthly beads. If beads are touching the reckoning bar they should be counted, if they are not touching the reckoning bar that column is equal to zero.

The abacus works very much like our number system! The farthest column to the right represents the ones place, the next column over represents the tens place and so on.


The heavenly beads are worth five times the earthly beads. For example. In the ones column, every heavenly bead is worth 5 and each earthly bead is worth 1. In the tens column each heavenly bead is worth 50 and each earthly bead worth 10.

For example: If you wanted to show 53 on the modern abacus you would need 3 ones and 5 tens.

3 ones would be three earthly beads from the ones column.

5 tens or 50 would be one heavenly bead from the tens column. It would look like this:

If you wanted to show 4,523 you would need 4 thousands, 5 hundreds, 2 tens and 3 ones.

3 earthly beads in the ones column makes 3 ones.

2 earthly beads in the tens column makes 2 tens.

1 heavenly bead in the hundreds column makes 5 hundreds.

4 earthly beads in the thousands column makes 4 thousand.

It would look like this:

Subscription for 12 Months Premium: Grade 2
$119.
88
$349
save 66%
  • Free delivery to your home
  • 30,000+ Practice Questions
  • 500+ Video Lectures
  • 15,000+ Video Explanations
  • Printable Worksheets and Games

Representing numbers on the abacus can be fun and helps you to gain a deeper understanding of what numbers mean and how they work.

What do you think about this article? Share your opinion with us

ENTER BELOW FOR ARGOPREP'S FREE WEEKLY GIVEAWAYS. EVERY WEEK!
Great! You will receive an email from US shortly. Have a great day!
FREE 100$ in books to a family!
Error! Please try again!
SUCCESS
See Related Worksheets:
2nd grade
Add and Subtract with Mental Math
Worksheets
 (0)
Draw a picture, select a sentence, use the strategies to help you solve! Learners will love this col...
View
6th grade
Are You Absolutely Positive?
Worksheets
 (0)
Students find the absolute value for the six numbers on this worksheet. This worksheet will have 6th...
View
6th grade
Area Wisdom
Worksheets
 (0)
Students will show the wisdom they have in finding the area of figures in this worksheet. They will ...
View
5th grade
Blizzards of Multiplication
Worksheets
 (0)
It's a blizzard of factors as learners work to solve each given multiplication problem in this two p...
View

Try ArgoPrep for FREE

Learn more Try ArgoPrep for FREE

Share good content with friends and get 15% discount for 12-month subscription

Share in facebook Share in twitter

Read More

Loading content ...
Loading failed...
Private Members List
Want 20% OFF Coupon?
Enter your details below to subscribe today and get special offers!