Question

6.8✘13-390✘0.06怎样简便计算？

Answer 1

6.8×13－390×0.06

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＝｛6.8×(10＋3)｝－｛（300＋9）×0.06｝

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＝｛6.8×10＋6.8×3｝－｛尺野蔽陵州300×0.06＋90×0.06｝

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＝｛脊镇68＋20.4｝－｛18＋5.4｝

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＝88.4－23.4

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＝65

Answer 2

6.8×13-390×0.06=6.8×13-13×30×0.06=13（6.8-30×0.06）兄清仔=13（羡汪正纯6.8-1.8）=13×5=65答案65.

Answer 3

6.8×13—扰族滚390×0.06
=6.8×13—缓余13×30×0.06
=13×（穗核6.8—1.8）
=13×5
=65

Answer 4

简正饥蠢举陪便方肢如法运算：
6.8×13-390×0.06
＝6.8×13-13×30×0.06
＝6.8×13-13×1.8
＝13×（6.8-1.8）
＝13×5
＝65

Answer 5

6.8×13-390×0.06
=6.8×13-13×30×0.06
=13×（6.8-1.8）
=13×5
=65