2.22x54+6.66x65+2.22简便计算
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2.22×54+6.66×65+2.22
=2.22×54+2.22×195+2.22
=2.22×(54+195+1)
=2.22×250
=2.22×(200+50)
=2.22×200+2.22×50
=444+111
=555
=2.22×54+2.22×195+2.22
=2.22×(54+195+1)
=2.22×250
=2.22×(200+50)
=2.22×200+2.22×50
=444+111
=555
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展开全部
2.22×54+6.66×65+2.22
=2.22×54+2.22×195+2.22
=2.22×(54+195+1)
=2.22×250
=2.22×(200+50)
=2.22×200+2.22×50
=444+111
=555
=2.22×54+2.22×195+2.22
=2.22×(54+195+1)
=2.22×250
=2.22×(200+50)
=2.22×200+2.22×50
=444+111
=555
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2.22*(54+3*65+1)乘法分配律简便计算
=2.22*250
=555
=2.22*250
=555
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=1.11×2×54+1.11×6×65+1.11×2
=1.11×108+1.11×390+1.11×2
=1.11×(108+390+2)
=1.11×400
=444
=1.11×108+1.11×390+1.11×2
=1.11×(108+390+2)
=1.11×400
=444
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