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2.25÷7.5x(3.2÷2.5)脱式计算简便

2.28÷7.5×(3.2÷2.5) =0.6×3.2÷2.5 =1.92÷2.5 =0.768 你好,本题已解答,如果满意 请点右下角“采纳答案”。

1。 7.5X(3/5)+2.5除以(5/3) =7.5X(3/5)+2.5X(3/5) =(7.5+2.5)X(3/5) =10X(3/5) =6. 2。 (2/9)除以[(5/6)X(4/5-2/3)] 解: 因为 [(5/6)X(4/5-2/3)]除以(2/9) =[(5/6)X(4/5-2/3)]X(9/2) =(9/2)X(5/6)X(4/5)-(9/2)X(5/6)X(2/3) =3-5/2 =1/2 所以 (...

答案是(1)x÷7.5=2.5 因为题目中是7.5“除”x,请注意:在除法中,“除以”和“除”是不同的,“除以”是先读被除数,也就是被除数除以除数等于商,而“除”则是先读除数,即除数除被除数等于商。 如本例:x÷7.5=2.5,可以读作x除以7.5等于2.5;也可以读...

7.5÷x=2.5÷12 7.5÷x=2.5/12 x=7.5÷2.5/12 x=7.5*12/2.5=3*12=36

7.5÷2.5+x=10.2 , 3+X=10.2, X=10.2-3, X=7.2。

7.8÷2.6×1.25 =3×1.25 =3.75

(4.8×7.5×8.1)÷(2.4×2.5×2.7) =(4.8÷2.4)×(7.5÷2.5)×(8.1÷2.7) =2×3×3 =18

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

您好: 4.75x29.5-3.75x29.5 =29.5x(4.75-3.75) =29.5x1 =1 1.25x0.4x0.8÷2 =(1.25x0.8)x(0.4÷2) =1x0.2 =0.2 7.5x3.23+3.23x2.5 =3.23x(7.5+2.5) =3.23x10 =32.3 198.8x4.2+4.8x198.8+198.8 =198.8x(4.2+4.8+1) =198.8x10 =1988 不明白,可以追...

7.5÷1.5x=2.5 1.5x=7.5÷2.5 x=3÷1.5 x=2

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