五年级简便算法带答案?那么,五年级简便算法带答案?一起来了解一下吧。
1. 5/2 -( 3/2 + 4/5 )
2. 7/8 + ( 1/8 + 1/9 )
3. 5/6 + ( 1/2 + 2/3 )
4. 9/7 - ( 2/7 - 10/21 )
5. 3/7 + 49/9 + 4/7
6. 8/9 + 15/36 + 3/27
7. 5/2 - ( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9/7 - ( 2/7 - 10/21 )
10. 1/5 + ( 3/7 + 8/10 )
6.8×0.41+0.59×3.4×2
=6.8×0.41+0.59×(3.4×2)
=6.8×0.41+0.59×6.8
=6.8×(0.41+0.59)
=6.8×1
=6.8
运用乘法分配率使计算简便。
1、7.43-(3.48-2.57)
=7.43-2.57-3.48
=10-3.48
=6.52
2、0.9+9.9+99.9+999.9+9999.9
=9×(0.1+1.1+11.1+111.1+1111.1)
=9×1234.5
=12345-1234.5
=11110.5
展开全部
41.5-33.8÷6.5
=41.5-(32.5+1.3)÷6.5
=41.5-(32.5÷6.5+1.3÷6.5)
=41.5-(5+0.2)
=41.5-0.2-5
=41.3-5
=36.3
原式=(1-0.1)+(10-0.1)+(100-0.1)+(1000-0.1)+(10000-0.1)
=1+10+100+1000+10000-0.5
=11111-0.5=11110.5
以上就是五年级简便算法带答案的全部内容,5。