2.22×9.9+6.66×6.7怎样简便计算小学五年级

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2.22×9.9+6.66×6.7怎样简便计算小学五年级

2.22×9.9+6.66×6.7怎样简便计算小学五年级
2.22×9.9+6.66×6.7怎样简便计算
小学五年级

2.22×9.9+6.66×6.7怎样简便计算小学五年级
2.22×9.9+6.66×6.7
=2.22×3×3.3+6.66×6.7
=6.66×3.3+6.66×6.7
=6.66×(3.3+6.7)
=6.66×10
=66.6

2.22×9.9+6.66×6.7
=6.66*3.3+6.66*6.7
=6.66*(3.3+6.7)
=6.66*10
=66.6

2.22×9.9+6.66×6.7
=2.22×3×3.3+6.66×6.7
=6.66×3.3+6.66×6.7
=6.66×(3.3+6.7)
=6.66×10
=66.6