Integers Division: 81 to 81  
Common Core Math Alignment: 7.NS.2. Apply and extend previous understandings of multiplication and division and of fractions to multiply and divide rational numbers.
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50% (375 x 200) 
75% (563 x 300) 
100% (750 x 400) 
150% (1125 x 600) 
200% (1500 x 800) 
300% (2250 x 1200) 