Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 5 0/10
310 + 5010 is 5310.
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Related: 6/10+50/10 3/20+50/10 3/10+50/20 9/10+50/10 3/30+50/10 3/10+50/30 15/10+50/10 3/50+50/10 21/10+50/10 3/70+50/10 3/10+50/70
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