问题
解答题
怎样算简便就怎样算.
4.32+5.43+6.68
15.17-6.8-3.2
12.75-(2.75+6.8)
答案
4.32+5.43+6.68
=4.32+6.68+5.43
=11+5.43
=16.43
15.17-6.8-3.2
=15.17-(6.8+3.2)
=15.17-10
=5.17
12.75-(2.75+6.8)
=12.75-2.75-6.8
=10-6.8
=3.2
怎样算简便就怎样算.
4.32+5.43+6.68
15.17-6.8-3.2
12.75-(2.75+6.8)
4.32+5.43+6.68
=4.32+6.68+5.43
=11+5.43
=16.43
15.17-6.8-3.2
=15.17-(6.8+3.2)
=15.17-10
=5.17
12.75-(2.75+6.8)
=12.75-2.75-6.8
=10-6.8
=3.2