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简便计算:9/14➗(1/3➗7/6%1/14)

12.6x7.6x2.32➗1.9➗1.4➗2.9如何用简便计算? 12.6x7.6x2.32➗1.9➗1.4➗2.9 =(12.6÷4)*(7.6÷1.9)*(2.32÷2.9) =3.15*4*0.8 =10.08

42➗28 =42➗7➗4 =6➗4 =1.5

1/6

2.1*5.1 *159.1➗0.7➗1.7➗3.7 =(2.1➗0.7)*(5.1 ➗1.7)*(159.1➗3.7) =3x3x43 =387

9

5➗(7➗11)➗(11➗16)➗(16➗35)简便方法 5➗(7➗11)➗(11➗16)➗(16➗35) =(11÷11)*(16÷16)*(35*5÷7) =1*1*25 =25

方框是什么,把45变成(50-5)应该就可以了

0.8x0.25x0.4x12.5 4.58➗2.5➗0.4 都简便计算过程具体 0.8x0.25x0.4x12.5 =(0.8*12.5)*(0.25*0.4) =10*0.1 =1 4.58➗2.5➗0.4 =4.58÷(2.5*0.4) =4.58÷1 =4.58

(980-184-16)➗35 =[980-(184+16)]➗35 =[980-200]➗35 =780➗35 =(770+10)➗35 =770➗35+10➗35 =22+2/7 =22又2/7

结合律。 列式为: 2100➗42 =2100➗(7x6) =2100➗7➗6 =300➗6 =50

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