Abacus Math
Level 04
Abacus Math Online Learning Program
About Level 04
In this level you will be learning the fifth sets of formulas for ‘Combination Add Order’ and the sixth sets of formulas for ‘Combination Less Order’ for less six to less nine and you will be doing single digits addition and subtraction sums based on the formula. The ‘Mental Arithmetic’ technique will be continued by which you can do sums calculations mentally without using physical abacus.