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addition and subtraction
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Maths Quiz
math addition to 20 addition 20 facts
Maths for 8th std
+4 = +5 -1 +3 = +5 -2 +2 = +5 -3 +1 = +5 -4
-4 = +1 -5 -3 = +2 -5 -2 = +3 -5 -1 = +4 -5
math 111 คณิตศาสตร์
abacus to be done with the help of addition
add and minus
التمثيلات البيانية بالصور ذي المقياس