Answer:
0.9
Step-by-step explanation:
because if you multiply 0.9 by 5 it equals 4.5, why?
well 0.9 isn't a full number it's not even 1!
If you multiply
5 × 1 = 5
so if you multiply what's smaller than 1 by 5
5 × 0.9 = 4.5
Hope this helps!
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