Question

奥数(简便计算）

4.6×7.2×53÷46÷7.2÷5.3,
(4.8×7.5×8.1)÷(2.4×2.5×2.7),
4.27÷26.8×3.59÷42.7×2.68÷35.9.
急！！！！！，快一点

Answer 1

4.6×7.2×53÷46÷7.2÷5.3
=（4.6÷46）×（7.2÷7.2）×（53÷5.3）
=0.1×1×10
=1
(4.8×7.5×8.1)÷(2.4×2.5×2.7)
=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
4.27÷26.8×3.59÷42.7×2.68÷35.9
=4.27×3.59×2.68÷26.8÷42.7÷35.9
=（4.27÷42.7）×（3.59÷35.9）×（2.68÷26.8）
=0.1×0.1×0.1
=0.001

Answer 2

4.6×7.2×53÷46÷7.2÷5.3
=（4.6×7.2×5.3）*10/[(4.6÷7.2÷5.3)*10]
=1

(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

Answer 3

4.6*7.2*53*1/46*1/7.2*10/53