Question

111x37+333x21用简便方法计算

Answer 1

Answer 2

上式=（100+10+1）×37+333×（20+1）
=3700+370+37+6660+333
=4070+37+6660+333
=4070+（37+333）+6660
=4070+370+6660
=11100

Answer 3

111x37+333x21
=111×37+111×3×21
=111×(37+3×21)
=111×100
=11100

Answer 4

=111×37+111×3×21
=111×37+111×63
=111×(37+63)
=111×100
=11100

Answer 5

111×37+333×21 =111×37+111×3×21 =111×37+111×63 =111×（37+63）=111×100=11100