Final answer:
To multiply 5 x 3, add 3 to the product of 2 x 3.
Step-by-step explanation:
To multiply 5 x 3, we can use the distributive property. We first multiply 2 x 3, which gives us 6. Then we multiply 5 x 6, which gives us 30. So, the strategy to multiply 5 x 3 is to add 3 to the product of 2 x 3 (Option C).
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