Question

使用简便算法？

9.6+7.3-6.6、
25.87+4.12+5.88、
34.82-（15.2+4.82)、
5.32-3.6+3.68-3.4、

Answer 1

对于这类题型，要想办法“凑整数”进行化简;

9.6 + 7.3 - 6.6 = (9.6 - 6.6) + 7.3 = 3 + 7.3 = 10.3
25.87 + 4.12 + 5.88 = 25.87 + (4.12 + 5.88) = 35.87
34.82 -（15.2 + 4.82) = (34.82 - 4.82) - 15.2 = 30 - 15.2 = 14.8
5.32 - 3.6 + 3.68 - 3.4 = (5.32 + 3.68) - (3.6 + 3.4) = 9 - 7 = 2
希望以上解答能帮到你！

Answer 2

9.6+7.3-6.6
=9.6-6.6+7.3
=3+7.3
=10.3
25.87+4.12+5.88
＝25.87+（4.12+5.88)
＝25.87+10
=35.87
34.82-（15.2+4.82)
=34.82-4.82-15.2
=30-15.2
=14.8
5.32-3.6+3.68-3.4
=5.32+3.68-3.6-3.4
＝9－（3.6+3.4）
＝9--7
=2