1樓:匿名使用者
(1/2+3/5)×5/11=11/10x5/11=1/28÷(6+2.5×4/5)
=8÷(6+2)
=8÷8=1
24÷6/7x5/14,(2/3-1/9)÷4/9要簡算 20
2樓:樂觀的愛數
24÷6/7x5/14
=24x7/6x5/14 (約分)=2x5
=1o(2/3-1/9)÷4/9
=2/3x9/4一1/9x9/4
=3/2-1/4
=5/4要簡算
3樓:艾康生物
24/6/7*5/14=24*7/6*5/14=24*5/12=10
(2/3-1/9)/4/9=2/3/4/9-1/9/4/9=3/2-1/4=5/4
4樓:匿名使用者
24÷6/7x5/14=24*49/15=392/5
(2/3-1/9)÷4/9=5/9*9/4=5/4
能簡便要簡便:4/5×4/7×5/4-1/3=? 5/9×6+4/9÷1/6=? 180÷2.5÷4=?
5樓:匿名使用者
4/5×4/7×5/4-1/3
=4/5×5/4×4/7-1/3
=4/7-1/3
=(12-7)/21
=5/21
5/9×6+4/9÷
1/6= 5/9×6+4/9×6=(5/9+4/9)×6=1×6=6180÷2.5÷4=180÷(2.5×4)=180÷10=18
1/8x9/7+5/7÷8能簡算的要簡算
6樓:提莫送你超神
1/8x9/7+5/7÷8可以先將裡面的5/7÷8化成5/7×1/81/8x9/7+5/7×1/8
=1/8×(9/7+5/7)
=1/8×16/7
=2/7
7樓:凌月霜丶
1/8x9/7+5/7÷8能簡算的要簡算
1/8x9/7+5/7÷8
=1/8*(9/7+5/7)
=1/8*16/7
=2/7
8樓:張zq芹
1/8x9/7+5/7÷8
=1/8x(9/7+5/7)
=1/8x16/7
=2/7提取相同的因數,加數相加
脫式計算,能簡算的要簡算: 46.5×99+46.5 12.5÷2.5÷0.4 2.6×1.9÷2.6×1.9 (7.7+1.54)
9樓:手機使用者
(1)46.5×99+46.5
=46.5×(99+1)
=46.5×100
=4650
(2)12.5÷2.5÷0.4
=12.5÷(2.5×0.4)
=12.5÷1
=12.5
(3)2.6×1.9÷2.6×1.9
=2.6÷2.6×1.9×1.9
=1×1.9×1.9
=3.61
(4)(7.7+1.54)÷0.7
=9.24÷0.7
=13.2
(5)10.8÷[(4.62-1.92)×4]=10.8÷[2.7×4]
=10.8÷10.8
=1(6)2.6×(2.139÷9.3×6.2)=2.6×(0.23×6.2)
=2.6×1.426
=3.7076
下面各題能簡算的要用簡便計算.1.36+4.85+2.64+6.15 98.5÷2.5÷4 5.4÷[2.5×(3.7-2.9)]0.8×(4-3.6
10樓:□小千
(1)1.36+4.85+2.64+6.15,=(1.36+2.64)+(4.85+6.15),=4+11,
=15;
(2)98.5÷2.5÷4,
=98.5÷(2.5×4),
=98.5÷10,
=9.85;
(3)5.4÷[2.5×(3.7-2.9)],=5.4÷[2.5×0.8],
=5.4÷2,
=2.7;
(4)0.8×(4-3.68)÷0.01,=0.8×0.32÷0.01,
=0.256÷0.01,
=25.6;
(5)83.7-12.83-0.17,
=83.7-(12.83+0.17),
=83.7-13,
=70.7;
(6)5.96+13×(3.2-3.12),=5.96+13×0.08,
=5.96+1.04,=7.
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