The abacus is an ancient calculating tool that dates back centuries. Early societies used some Abacus form of it to count and do arithmetic long before they invented numbers. It is a tool with sliding beads to represent numbers. It has rows or columns of beads that represent the digits of your number. You'll have a ones place, a tens place, a hundred place, a thousand place, and so on.
The abacus system of mental calculation is a system where children mentally visualize an abacus to do calculations. The standard abacus can be used to perform addition, subtraction, division, and multiplication; the abacus can also be used to extract square-roots and cubic roots.
At iNAVMO we use the abacus because it is an invaluable tool to help children understand mathematics.
Direct Sums on Abacus
Alpha Group - Level 1 For KG (KINDER GARTEN) | ||
Total Question - 70 | Total Time - 10 Min | Total Marks - 70 |
20 Questions | Single Digit addition and Subtraction 2 Rows sums without carry over | |
20 Questions | Single Digit addition and Subtraction 4 Rows sums without carry over | |
30 Questions | Double and Single digit addition and Subtraction 2 Rows sums without carry over | |
Numbers upto 50 only for LKG & UKG. click here to see the sample paper. |
Alpha Group - Level 2 For Grade 1 Only | ||
Total Question - 70 | Total Time - 10 Min | Total Marks - 70 |
20 Questions | Single Digit 2 Rows addition and Subtraction sums without carry over | |
20 Questions | Single Digit 4 Rows addition and Subtraction sums without carry over | |
30 Questions | Double Digit 2 Rows addition and Subtraction sums without carry over | |
Numbers upto 100 only for Class 1. click here to see the sample paper. |