小学六年级数学脱式计算(能简便的要简便运算):第一题:10.65-7.17-2.83+9.35第二题:4.48÷{(4.3-3.6)×0.8}第三题:7/12÷{3/4×(1/3+1/4)第四题:7/9×3/11+2/9÷11/3
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![小学六年级数学脱式计算(能简便的要简便运算):第一题:10.65-7.17-2.83+9.35第二题:4.48÷{(4.3-3.6)×0.8}第三题:7/12÷{3/4×(1/3+1/4)第四题:7/9×3/11+2/9÷11/3](/uploads/image/z/129814-70-4.jpg?t=%E5%B0%8F%E5%AD%A6%E5%85%AD%E5%B9%B4%E7%BA%A7%E6%95%B0%E5%AD%A6%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%88%E8%83%BD%E7%AE%80%E4%BE%BF%E7%9A%84%E8%A6%81%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%EF%BC%89%EF%BC%9A%E7%AC%AC%E4%B8%80%E9%A2%98%EF%BC%9A10.65-7.17-2.83%2B9.35%E7%AC%AC%E4%BA%8C%E9%A2%98%EF%BC%9A4.48%C3%B7%7B%EF%BC%884.3-3.6%EF%BC%89%C3%970.8%7D%E7%AC%AC%E4%B8%89%E9%A2%98%EF%BC%9A7%2F12%C3%B7%7B3%2F4%C3%97%EF%BC%881%2F3%2B1%2F4%EF%BC%89%E7%AC%AC%E5%9B%9B%E9%A2%98%EF%BC%9A7%2F9%C3%973%2F11%2B2%2F9%C3%B711%2F3)
小学六年级数学脱式计算(能简便的要简便运算):第一题:10.65-7.17-2.83+9.35第二题:4.48÷{(4.3-3.6)×0.8}第三题:7/12÷{3/4×(1/3+1/4)第四题:7/9×3/11+2/9÷11/3
小学六年级数学脱式计算(能简便的要简便运算):
第一题:10.65-7.17-2.83+9.35
第二题:4.48÷{(4.3-3.6)×0.8}
第三题:7/12÷{3/4×(1/3+1/4)
第四题:7/9×3/11+2/9÷11/3
小学六年级数学脱式计算(能简便的要简便运算):第一题:10.65-7.17-2.83+9.35第二题:4.48÷{(4.3-3.6)×0.8}第三题:7/12÷{3/4×(1/3+1/4)第四题:7/9×3/11+2/9÷11/3
第一题:10.65-7.17-2.83+9.35
=(10.65+9.35)-(7.17-2.83)
=20-10
=10
第二题:4.48÷{(4.3-3.6)×0.8}
=4.48÷(0.7×0.8)
=4.48÷0.56
=8
第三题:7/12÷{3/4×(1/3+1/4)
=7/12÷(3/4×7/12)
=7/12÷7/16
=7/12×16/7
=4/3
第四题:7/9×3/11+2/9÷11/3
=7/9×3/11+2/9×3/11
=3/11×(7/9+2/9)
=3/11×1
=3/11
10.65-7.17-2.83+9.35
=(10.65+9.35)-(7.17+2.83)
=10
1、=10.65+9.35-(7.17+2.83)
=20-10=10
2、=4.48÷0.8÷0.7
=5.6÷0.7
=8
3、=7/12÷7/12÷3/4
=1÷3/4
=4/3
4、=7/9×3/11+2/9×3/11
=(7/9+2/9)×3/11
=1×3/11
=3/11
第一题:
10.65-7.17-2.83+9.35
= 10.65-10+9.35
= 0.65+9.35
= 10
第二题:
4.48÷{(4.3-3.6)×0.8}
= 4.48 ÷ (0.7×0.8)
= 4.48 ÷ 0.56
= 8
第三题:
7/12÷{3/4×(1/3+1/4)
= 7/1...
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第一题:
10.65-7.17-2.83+9.35
= 10.65-10+9.35
= 0.65+9.35
= 10
第二题:
4.48÷{(4.3-3.6)×0.8}
= 4.48 ÷ (0.7×0.8)
= 4.48 ÷ 0.56
= 8
第三题:
7/12÷{3/4×(1/3+1/4)
= 7/12÷(3/4×7/12)
= 4/3
第四题:
7/9×3/11+2/9÷11/3
= 7/33 + 2/297
= 63/297 + 2/297
= 65/297
收起
1.)10.65+9.35-(7.17+2.83)=10
2)8
3)7/12÷1/16=7/12)*16=28/3
4)21/99+6/99=27/99=3/11
(1)10.65-7.17-2.83+9.35
=(10.65+9.35)-(7.17+2.83)
=20-10=10
(2)4.48÷{(4.3-3.6)×0.8}
=4.48÷(0.7x0.8)
=4.48÷0.8÷0.7=5.6÷0.7
=8
(3)7/12÷{3/4×(1/3+1/4)}
=7/12÷(3/4x1/3+3/4x...
全部展开
(1)10.65-7.17-2.83+9.35
=(10.65+9.35)-(7.17+2.83)
=20-10=10
(2)4.48÷{(4.3-3.6)×0.8}
=4.48÷(0.7x0.8)
=4.48÷0.8÷0.7=5.6÷0.7
=8
(3)7/12÷{3/4×(1/3+1/4)}
=7/12÷(3/4x1/3+3/4x1/4)
=7/12÷(1/4+3/4x1/4)
=7/12÷{(1+3/4)x1/4)}
=7/12÷7/4÷1/4
=4/3
(4)7/9×3/11+2/9÷11/3
=7/9×3/11+2/9x3/11
=(7/9+2/9)×3/11
=3/11
我不知道有些代换规律六年级可能没有学到,你看看哪里他们没有学到的,我再改改。
收起
一: 10.65+9.35-(7.17+2.83)
=20-10
=10
二:4.48÷0.8÷(4.3-3.6)
=5.6÷0.7
=8
三;7/12÷(3/4X7/12)
=7/12X4/3X12/7
=4/3
四;7/9X3/11+2/9X3/11
=(7/9+2/9)X3/11
=3/11