Final answer:
In this math question, the multiplication of numbers by 10 is explored, with examples provided.
Step-by-step explanation:
In the first part of the question, 90 is multiplied by 10, resulting in 900. So, 90 x 10 = 900.
In the second part of the question, 9 is multiplied by 10, resulting in 90. So, 9 x 10 = 90.
In the third part of the question, 0.9 is multiplied by 10, resulting in 9. So, 0.9 × 10 = 9.
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