小学六年级上册数学分数与小数混合运算共30题 小学数学六年级上册分数混合运算练习题带答案
\u516d\u5e74\u7ea7\u6570\u5b66\u4e94\u9053\u5206\u6570,\u5c0f\u6570\u6df7\u5408\u8fd0\u7b97\u98981+1/2-5/6+7/12-9/20+11/30=\uff1f1+1/2-5/6+7/12-9/20+11/30=1+1/2-(1/2+1/3)+1/3+1/4-(1/4+1/5)+1/5+1/6=1+1/2-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6=1+1/6=1.16667
0.4\u00d7125\u00d725\u00d70.8
1.25\u00d7\uff088+10\uff09
9123-\uff08123+8.8\uff09
1.24\u00d78.3+8.3\u00d71.76
9999\u00d71001
14.8\u00d76.3-6.3\u00d76.5\uff0b8.3\u00d73.7
1.24+0.78+8.76
933-157-43
4821-998
32\u00d7125\u00d725
9048\u00f726
2881\u00f7 43
3.2\u00d742.3\u00d73.75-12.5\u00d70.423\u00d716
1.8+18\u00f71.5-0.5\u00d70.3
6.5\u00d78+3.5\u00d78-47
(80-9.8)\u00d75\u5206\u4e4b2-1.32
8\u00d77\u5206\u4e4b4\u00f7[1\u00f7(3.2-2.95)]
2700\u00d7\uff08506\uff0d499\uff09\u00f7900
33.02\uff0d\uff08148.4\uff0d90.85\uff09\u00f72.5
\uff081\u00f71\uff0d1\uff09\u00f75.1
18.1\uff0b\uff083\uff0d0.299\u00f70.23\uff09\u00d71
计算过程如下:
20/39×7.8
=20/39×78/10
=20/39×39/5
=20/5
=4
分数计算:
异分母分数相加减,先通分,即运用分数的基本性质将异分母分数转化为同分母分数,改变其分数单位而大小不变,再按同分母分数相加减法去计算,最后能约分的要约分。
分数除以整数,分母不变,如果分子不是整数的倍数,则用这个分数乘这个整数的倒数,最后能约分的要约分。
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
(6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8
(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
6-1.6÷4= 5.38+7.85-5.37=
7.2÷0.8-1.2×5= 6-1.19×3-0.43=
6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
10.15-10.75×0.4-5.7
5.8×(3.87-0.13)+4.2×3.74
32.52-(6+9.728÷3.2)×2.5
[(7.1-5.6)×0.9-1.15] ÷2.5
5.4÷[2.6×(3.7-2.9)+0.62]
12×6÷(12-7.2)-6 (4)12×6÷7.2-6
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