1)37•218+63•218=218(37+63)=218*100=21800
2)568*43-566*43=43(568-566)=43*2=86
3)417•187+417•213=417(187+213)=417*400=166800
4)52•187-43•52-52•44 =52(187-43-44)=52*100=5200
1)37•218+63•218=218(37+63)=218*100=21800
2)568*43-566*43=43(568-566)=43*2=86
3)417•187+417•213=417(187+213)=417*400=166800
4)52•187-43•52-52•44 =52(187-43-44)=52*100=5200