1. 632*(47+53)= 632*100=63 200
2. 598*49-597*49=49*(598-597)= 49*1=49
3. 754*324-754*314= 754*(324-314)=754*10=7540
4. 37*46-18*37+37*72=37*(46-18+72)=37*100=3700
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1. 632*(47+53)= 632*100=63 200
2. 598*49-597*49=49*(598-597)= 49*1=49
3. 754*324-754*314= 754*(324-314)=754*10=7540
4. 37*46-18*37+37*72=37*(46-18+72)=37*100=3700
1) 632 * ( 47 + 53 ) = 63200
2) 49 * ( 598 - 597 ) = 49
3) 754 * ( 324 - 314 ) = 7540
4) 37 * ( 46 + 72 - 18 ) = 3700