如题所述
第1个回答 2017-11-28
①0.75×4×0.25×4，
=0.75×（4×0.25）×4，
=0.75×1×4，
=3
②9.6+9.9×99，
=9.6+980.1，
=989.7；
③15.58÷8.2-0.72，
=1.9-0.72，
=1.18
④4.536÷0.8÷14，
=5.67÷14，
=0.405
⑤2.8×3.6+1.4×2.8，
=（3.6+1.4）×2.8，
=5×2.8，
=14
⑥6.3×10.1，
=6.3×（10+0.1），
=6.3×10+6.3×0.1，
=63+0.63，
=63.63本回答被网友采纳
=0.75×（4×0.25）×4，
=0.75×1×4，
=3
②9.6+9.9×99，
=9.6+980.1，
=989.7；
③15.58÷8.2-0.72，
=1.9-0.72，
=1.18
④4.536÷0.8÷14，
=5.67÷14，
=0.405
⑤2.8×3.6+1.4×2.8，
=（3.6+1.4）×2.8，
=5×2.8，
=14
⑥6.3×10.1，
=6.3×（10+0.1），
=6.3×10+6.3×0.1，
=63+0.63，
=63.63本回答被网友采纳
