脱式计算.(能简算的要简算) 6.8×0.75÷0.5 13.5÷2.5-2.75 0

2024-12-17 18:36:23
推荐回答(1个)
回答1:

(1)6.8×0.75÷0.5,
=68×(0.75÷0.5),
=68×1.5,
=102;

(2)13.5÷2.5-2.75,
=5.4-2.75,
=2.65;

(3)0.125×0.25×32,
=0.125×0.25×4×8,
=(0.125×8)×(0.25×4),
=1×1,
=1;

(4)0.9+9.9+99.9+0.3,
=(1-0.1)+(10-0.1)+(100-0.1)+0.3,
=111-0.3+0.3,
=111.