6.15×9.4—42简便运算?

如题所述

6.15×9.4-42
=57.81-42
=15.81
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6.15×9.4-42 怎么简算
=6.15x(10-0.6)-42 =61.5-3.69-42 =15.81

6.15×9.4-42简便计算
解:6.15×9.4-42 =(6+0.15)x(10-0.6)-42 =6x10-6x0.6+0.15x10-0.15x0.6 =60-3.6+1.5-0.09-42 =15.81

6.15x9.4-42=多少简便运算
6.15x9.4-42 =6.15×(10-0.6)-4.2 =61.5-3.69-4.2 =61.5-7.89 =53.61

6.15×9.4—42简便运算?
=0.615*94-42=0.615*(100-6)-42=61.5-3.69-42=15.81

6.15X9.4_42的简便算式
(6+0.15)X(9+0.4)-42 =6X9+6X0.4+0.15X9+0.15X0.4-42 =54+2.4+1.35+0.06-42

6.15×9点4-4十二怎么算
6.15*9.4-42=15.81

6.15x9.4一42脱式计算
6.15x9.4一42脱式计算 6.15x9.4一42 =57.81-*42 =15.81 直接计算

6.15×9.4-4.2简便运算?
6.15x9.4-4.2 =6.15x(10-0.6)-4.2 =61.5-6.15x0.6-4.2 =61.5-3.69-4.2 =53.61

6.15X9.4_42的简便算式
(6+0.15)X(9+0.4)-42 =6X9+6X0.4+0.15X9+0.15X0.4-42 =54+2.4+1.35+0.06-42

6.15×9.4-42脱式计算
6.15x9.4一42 =57.81-42 =15.81

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