简便运算7.2×0.2＋2.4×1.4 2.3×16+2.3×23＋2.3 2.22×9.9＋6.66×6.7
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/24 20:50:56
简便运算7.2×0.2＋2.4×1.42.3×16+2.3×23＋2.32.22×9.9＋6.66×6.7简便运算7.2×0.2＋2.4×1.42.3×16+2.3×23＋2.32.22×9.9＋6.
简便运算7.2×0.2＋2.4×1.4 2.3×16+2.3×23＋2.3 2.22×9.9＋6.66×6.7
简便运算7.2×0.2＋2.4×1.4 2.3×16+2.3×23＋2.3 2.22×9.9＋6.66×6.7
简便运算7.2×0.2＋2.4×1.4 2.3×16+2.3×23＋2.3 2.22×9.9＋6.66×6.7
7.2×0.2＋2.4×1.4
=2.4×0.6+2.4×1.4
=2.4×（0.6+1.4）
=2.4×2
=4.8
2.3×16+2.3×23＋2.3
=2.3×（16+23+1）
=2.3×40
=92
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
7.2×0.2＋2.4×1.4
=2.4X0.6+2.4X1.4
=2.4X(0.6+1.4)
=2.4X2
=4.8
2.3×16+2.3×23＋2.3
=2.3X(16+23+1)
=2.3X40
=92
2.22×9.9＋6.66×6.7
=6.66X3.3+6.66X6.7
=6.66X(3.3+6.7...
全部展开
7.2×0.2＋2.4×1.4
=2.4X0.6+2.4X1.4
=2.4X(0.6+1.4)
=2.4X2
=4.8
2.3×16+2.3×23＋2.3
=2.3X(16+23+1)
=2.3X40
=92
2.22×9.9＋6.66×6.7
=6.66X3.3+6.66X6.7
=6.66X(3.3+6.7)
=6.66X10
=66.6
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7.2×0.2+2.4×1.2 简便运算
简便运算7.2×0.2＋2.4×1.4 2.3×16+2.3×23＋2.3 2.22×9.9＋6.66×6.7
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