ldcf.net
当前位置:首页 >> 2.6*1.9/2.6*1.9递等式计算 >>

2.6*1.9/2.6*1.9递等式计算

5/9-(2/9+1/6) =5/9-2/9-1/6 =1/3-1/6 =2/6-1/6 =1/6

6.3×27 +21×1.9 =21×(0.3×27)+21×1.9 =21×8.1+21×1.9 =21×(8.1+1.9) =21×10 =210

=(7/9-2/9)+(1/3+2/3) =5/9+1 =1又5/9

(1)2×1.4+2×1.6,=2×(1.4+1.6),=2×3,=6,(2)30.9÷[14-(9.85+1.15)],=30.9÷(14-11),=30.9÷3,=10.3.

3.9—4.1+6.1—5.9 =(6.1-4.1)+(3.9-5.9) =2-(5.9-3.9) =2-2 =0 方法2: 3.9-4.1+6.1-5.9 =(3.9+6.1)-(4.1+5.9) =10-10 =0

5/8+5/6–1/9 =30/48+40/48–1/9 =70/48-1/9 =315/216-24/216 =291/216 =97/72

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...

4/3—(2/5+3/1O丿=4O/3O一{I2/30+9/3o)=4o/30_21/3o=丨9/30先通分再计算

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com