Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 2/5 of 2/10?"
25 × 210 is 225.
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Related: 4/5×2/10 2/5×4/10 2/10×2/10 2/5×2/20 6/5×2/10 2/5×6/10 2/15×2/10 2/5×2/30 10/5×2/10 2/25×2/10 2/5×2/50 14/5×2/10 2/5×14/10 2/35×2/10 2/5×2/70
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