Заполни пропуски в равенствах: 1. 8 \(\cdot\) 4 = 8 + 8 + 8 + 8 = \(\boxed{32}\) <br> 2. 15 \(\cdot\) 3 = 15 + 15 + \(\boxed{15}\) = \(\boxed{45}\) <br> 3. 4 \(\cdot\) 2 = 4 + \(\boxed{4}\) = \(\boxed{8}\)

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