1樓:專屬nnn丶
(1)360÷15-2.5×1.4,
=24-2.5×(1+0.4),
=24-2.5×1-2.5×0.4,
=24-2.5-1,
=21.5-1,
=20.5;
(2)5 6
×2 3
+4 9
÷1 6
,=5 9
+4 9
×6,=5 9
+24 9
,=29 9
;(3)0.16+4÷(3 8
-1 8
),=0.16+4÷1 4
,=0.16+16,
=16.16;
(4)3 7
-2 5
+4 7
-3 5
,=(3 7
+4 7
)-(2 5
+3 5
),=1-1,=0.
360除以15減2.5乘1.4用簡便運算
2樓:在乘風亭徜徉的荀攸
最後結果等於20.5。
親們,點贊謝謝
3樓:公西正
=360÷15-2.5×(1+0.4)
=360÷15-(2.5×1+2.5×0.4)=360÷15-(2.5+1)
=360÷15-3.5
=24-3.5
=20.5
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
4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.
3060÷15-2.5×36有簡便麼?怎麼簡便?
5樓:南方飛虹
3060÷15-2.5×36有簡便麼?怎麼簡便?
3060÷15-2.5×36
=204-2.5×4×9
=204-10×9
=204-90
=114
下面各題能簡算的要用簡便計算
6樓:入戲
(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.
怎樣簡便就怎樣算 35.6+(12.6-4.4) 90÷0.4÷2.5 0.86×15.4-14.4×0.86 5.4÷0.6+(2.3-0.46
7樓:匿名使用者
(1)35.6+(12.6-4.4),
=35.6+8.2,
=43.8;
(2)90÷0.4÷2.5,
=90÷(0.4×2.5),
=90÷1,
=90;
(3)0.86×15.4-14.4×0.86,=0.86×(15.4-14.4),
=0.86×1,
=0.86;
(4)5.4÷0.6+(2.3-0.46),=5.4÷0.6+1.84,
=9+1.84,
=10.84;
(5)7.52×10.1,
=7.52×(10+0.1),
=7.52×10+7.52×0.1,
=75.2+0.752,
=75.952;
(6)1.25×0.7×0.8,
=1.25×0.8×0.7,
=1×0.7,
=0.7.
720÷15-2.5×14。怎樣簡便怎樣算?
8樓:知識之窗
720÷15-2.5×14
=48-2.5×14
=48-35=13
脫式計算 5-5/14÷3/4+22/7 76.3×5/9+27-4/5 13/50÷8/15÷34/40 6.2÷9/5 6.2÷9/6+2.5×5/9 化
9樓:辛新土
計算2.4:0.75
=2.4x4/3
=3.2
7 07 1 8 7 09下面各題怎麼算簡便就怎樣算
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