用递等式计算(能简算的要简算) 5.03-2.5+0.96 35.72-(5.9+5.72) 25-4.7+5.3 1.3+2.83+8.7+0.1

2025-05-16 09:51:29
推荐回答(1个)
回答1:

(1)5.03-2.5+0.96,
=2.53+0.96,
=3.49;

(2)35.72-(5.9+5.72),
=35.72-5.9-5.72,
=35.72-5.72-5.9,
=30-5.9,
=24.1;

(3)25-4.7+5.3,
=20.3+5.3,
=25.6;

(4)1.3+2.83+8.7+0.17,
=(1.3+8.7)+(2.83+0.17),
=10+3,
=13;

(5)2.47-2.2-3.8+7.53,
=(2.47+7.53)-(2.2+2.8),
=10-5,
=5.