Mathematics
Multiplication of Whole Numbers
In this Mathematics topic from Arithmetic Operations, Class 9 students strengthen their understanding of multiplying whole numbers and applying the operation accurately in different situations. They practise place-value methods, long multiplication, estimation, and checking results, while exploring key properties such as closure, commutativity, associativity, the identity property, the zero property, and the distributive property. The topic also connects multiplication with repeated addition, division, and everyday word problems involving quantities, groups, and measurements.
Topic overviewटॉपिक का परिचय
Concept revisionअवधारणाओं का पुनरावर्तन
What is the value of 9 × 8?
The governing concept is multiplication as repeated addition or equal groups. The expression 9 × 8 represents eight groups of 9, so 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 72.