Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 2/10 of 1/10?"
210 × 110 is 150.
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Related: 4/10×1/10 2/10×2/10 2/20×1/10 2/10×1/20 6/10×1/10 2/10×3/10 2/30×1/10 2/10×1/30 2/10×5/10 2/50×1/10 2/10×1/50 14/10×1/10 2/10×7/10 2/70×1/10 2/10×1/70
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