31.7-0.5*0.7-1.65怎么简便运算
31.7-0.5*0.7-1.65怎么简便运算
31.7-0.5*0.7-1.65
=31.7-0.35-1.65
=31.7-(0.35+1.65)
=31.7-2
=29.7
31.7-0.5×0.7-1.65
31.7-0.5×0.7-1.65
=31.7-0.35-1.65
=31.7-(0.35+1.65)
=31.7-2
=29.7
31.7一0.35一1.65用简便运算
=31.7-(0.35+1.65)
=31.7-2
=29.7
2.7-0.5×0.7-1.65的简便计算
2.7-0.5×0.7-1.65的简便计算
2.7-0.5×0.7-1.65
=2.7-0.35-1.65
=2.7-(0.35+1.65)
=2.7-2
=0.7
0.124x0.7x0.5怎么简便运算
0.124x0.7x0.5
=(0.124×0.5)x0.7
=0.062x0.7
=0.0434
48.6-0.5×0.7-0.65 的简便运算?
=48.6-(0.35+0.65)
=48.6-1
=47.6
12.3一0.5x0.7一0.65,简便运算
12.3一0.5x0.7一0.65
=12.3-(0.35+0.65)
=12.3-1
=11.3
凑整的数直接相加
25.8×9.3+0.7的简便运算怎么简便
25.8×9.3+0.7=25.8×(10-0.7)+0.7=25.8×10-25.8×0.7+0.7
=25.8×10-(25.8-1)×0.7==258-24.8×0.7=240.64
2.24×1.65×0.6简便运算
2.24×1.65×0.6
=2.24*0.99
=2.2176
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