Find the product: (a) 5.2125×19
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the only way I can do it in the morning
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Just an example:
Order property
When two numbers are multiplied we get a product. When the places of numbers are interchanged, their product remains the same, i.e., 3 × 5 = 5 × 3 = 15; 10 × 2 = 2 × 10 = 20.
This is called the order property for multiplication of numbers.
(i) 4 × 7 = 28 and 7 × 4 = 28.
So, 4 × 7 = 7 × 4 = 28
The orders of 4 and 7 are interchanged but product 28 remains the same.
(ii) 6 × 9 = 54 and 9 × 6 = 54.
So, 6 × 9 = 9 × 6 = 54
The orders of 6 and 9 are interchanged but product 54 remains the same.
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