56+44×56 巧算

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56+44×56 巧算

56+44×56 巧算
56+44×56 巧算

56+44×56 巧算
56+44×56
=56乘以(44+1)
=56乘以45
=56乘以(50-5)
=56乘以50-56乘以5
=2800-280
=2520

56*(44+1)
=56*45
=2520

56+44×56
=56*45
=28*90
=28(100-10)
=2800-280
=2520

=45*56=45*55+45=(50+5)(50-5)+45=50^-5^+45=2500-25+45=2520

56+44×56 =(44+1)×56

56+44*56=(1+44)*56=45*56=45*45+45*11=2025+495=2520