问题描述:
简便计算.
1.36*2.5
=
=
=
2.0.125*7.2
=
=
=
3.9.99+9.99*9
=
=
=
4.401*0.32
=
=
=
应用题.
1.回收1吨废纸,可以少砍16棵树,回收24.5吨废纸可以少砍伐多少棵树?
1.36*2.5
=
=
=
2.0.125*7.2
=
=
=
3.9.99+9.99*9
=
=
=
4.401*0.32
=
=
=
应用题.
1.回收1吨废纸,可以少砍16棵树,回收24.5吨废纸可以少砍伐多少棵树?
问题解答:
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