www.qnmk.net > 3.4×7×1.5的简便计算怎么算?急急急!

3.4×7×1.5的简便计算怎么算?急急急!

3.4✘1.5✘7

法一: 3.4x7x1.5 =3.4x10.5 =3.4x(10+0.5) =3.4x10+3.4x0.5 =34+1.7 =35.7 法二: 3.4×7×1.5 =1.7×7×2×1.5 =11.9×3 =35.7 法三: 3.4*7*1.5 =(2*1.7)*7*1.5 =2*1.5*1.7*7 =3*1.7*7 =5.1*7 =35.7 希望帮到你 望采纳 谢谢 加油!!

3.4×7×1.5怎样用简便方法计算: 法一: 3.4x7x1.5 =3.4x(7x1.5) =3.4x10.5 =3.4x(10+0.5) =3.4x10+3.4x0.5 =34+1.7 =35.7 法二: 3.4×7×1.5 =(1.7×7)×(2×1.5) =11.9×3 =35.7 法三: 3.4*7*1.5 =(2*1.7)*7*1.5 =2*1.5*1.7*7 =3*1.7*7 =5.1*7 =35.7

3.4 X 7 X 1.5 = 1.7 X 2 X 1.5 X 7 = 1.7 X 3 X 7 = 5.1 X 7 = 35.7 满意请采纳。

3.4×7×1.5的简便算法(递等式计算) =7x1.5x3.4 =10.5x3.4 =10x3.4+0.5x3.4 =34+1.7 =35.7

原式=3.4X0.5X3X7=1.7X3X7=5.1x7=35.7

3.4×7×1.5 =3.4*7*(1+0.5) =3.4*(7+3.5) =3.4*10.5 =3.4*(10+0.5) =3.4*10+3.4*0.5 =34+1.7 =35.7

=(4-0.6)x1.5x7 =(9-0.9)x7 =63-6.3 =56.7

3.4×7×1.5 =(3.4×1.5)×7 =5.1×7 =35.7 你好,本题已解答,如果满意 请点右下角“采纳答案”。

=3.4×1.5×7 =3.4×5×0.3×7 =17×0.3×7 =5.1×7 =35.7

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