能简算的要简算．1.25×3.36×8；1.2×0.4+0.4×1.3；1.25×32×0.25；27.5×46+275×5.4．

Question

能简算的要简算．
1.25×3.36×8；    1.2×0.4+0.4×1.3；     1.25×32×0.25；     27.5×46+275×5.4．

Answer 1

（1）1.25×3.36×8
=1.25×8×3.36
=10×3.36
=33.6

（2）1.2×0.4+0.4×1.3
=0.4×（1.2+1.3）
=0.4×2.5
=1

（3）1.25×32×0.25
=（1.25×8）×（4×0.25）
=10×1
=10

（4）27.5×46+275×5.4
=275×4.6+275×5.4
=275×（4.6+5.4）
=275×10
=2750