1樓:馴魚
(1)6 5
×215
+215 ÷4
5,=6 5
×215
+215
×5 4
,=215
×(6 5
+5 4
),=2 15
×4920
,=49
150;
(2)8 3
×(1 3
-821
×816
),=8 3
×(1 3
-421
),=8 3
×1 7
,=821
;(3)9
10×11-9
10,=9
10×(11-1),
=9 10
×10,=9.
脫式計算:一、用簡便方法計算下面各題。⒈6/5×2/15×2/15×4/5 = = = =
2樓:樂為人師
6/5×2/15+2/15×4/5
=(6/5+4/5)×2/15
=2×2/15
=4/15
用簡便方法計算下面各題: 3/9×8 3/9×2 6/5×2/15+2/15×4/5 36×(1
3樓:匿名使用者
用簡便方法計算下面各題:
3/9×8 +3/9×2
=3/9×(8+2)
=1/3×10
=10/3
6/5×2/15+2/15×4/5
=2/15×(6/5+4/5)
=2/15×2
=4/15
36×(
專1/3-5/18+7/12)
屬=36×1/3-36×5/18+36×7/12=12-10+21=23
計算下面各題(能簡便的用簡便方法) 1/5+7/15+4/15 7/10-(3/4-2/5) 1-7/15-2/5 13/15-(1/3+2/5)
4樓:奈貞韻板婧
你說的女孩房間時都會發生地方還是大家發揮
用簡便方法計算下面各題6/5-6/11-5/11× 10
5樓:葉聲紐
用簡便方法計算下面各題6/5-6/11-5/116/5=6/11-5/11
=6/5-(6/11+5/11)
=6/5-1
=1/5.
計算下面各題能用簡便方法的要用簡便運算5/8×24/25-1/4
6樓:彭曠穰青文
(1)8分之5*25分之4+6分之1/12分之5=5/8*4/25+1/6*12/5
=1/10+2/5
=1/10+4/5
=1/2
(2)[1-(4分之1-8分之1)]*7分之5=[1-2/8+1/8]*5/7
=7/8*5/7
=5/8
2-13分之9+26分之15-4分之3
=2-18/26+15/26-3/4
=2-3/26-3/4
=2-6/52-39/52
=2-45/52
=59/52
計算下面各題.(能簡便計算的要簡便計算)4.2×(6.18-3.03)+6.315.02-6.8-(1.02+1.2)0.6×[(5-0.68
7樓:匿名使用者
(1)4.2×(6.18-3.03)+6.3,=4.2×3.15+6.3,
=13.23+6.3,
=19.53;
(2)15.02-6.8-(1.02+1.2),=15.02-6.8-1.02-1.2,
=(15.02-1.02)-(6.8+1.2),=14-8,
=6;(3)0.6×[(5-0.68)÷1.2],=0.6×[4.32÷1.2],
=0.6×3.6,
=2.16;
(4)2.7÷4+6.3×0.25,
=2.7×0.25+6.3×0.25,
=(2.7+6.3)×0.25,
=9×0.25,
=2.25;
(5)(6.02+2.8)÷0.4-2.05,=8.82÷0.4-2.05,
=22.05-2.05,
=20;
(6)3.08×3.5+6.2×3.08+3.08×0.3,=(3.5+6.2+0.3)×3.08,
=10×3.08,
=30.8.
計算下面各題,能用簡便方法的要用簡便方法計算。急急急急急急急急急急急急急急急急!!!!
8樓:匿名使用者
(15-8)×十四分之五
=7×十四分之五
=十四分之三十五
9樓:匿名使用者
(15-8)x5/14=5/2
計算下面各題,能用簡便方法的就用簡便方法計算.(1)15.52-1.6×5-5.7 (2)9.83×1.5+6.17×1.5(3)1
10樓:二二二
(zhi1)15.52-1.6×dao5-5.7,內=15.52-8-5.7,
=7.52-5.7,
=1.82;容
(2)9.83×1.5+6.17×1.5,=1.5×(9.83+6.17),
=1.5×16,
=1.5×2×8,
=24;
(3)19.8-0.6×0.6-0.64,=19.8-0.36-0.64,
=19.8-(0.36+0.64),
=19.8-1,
=18.8;
(4)0.125×7.9×8,
=0.125×8×7.9,
=1×7.9,
=7.9;
(5)63×10.1,
=63×(10+0.1),
=63×10+63×0.1,
=630+6.3,
=636.3;
(6)21.5÷[(6.07+2.53)×0.5],=21.5÷[8.6×0.5],
=21.5÷[0.5×2×4.3]
=21.5÷4.3,=5.
用簡便方法計算下面各題,用簡便方法計算下面各題
1.25x64x0.25 1.25 8 8 0.25 10 2 20 751 299 751 300 1 452 8分之6 6分之一x8分之6 6 8 1 1 6 6 8 1 6 1 8 4分之1 6分之1 3分之1 12分之1 1 4 1 6 1 3 12 3 2 4 1 13分之20 7分之5 ...
計算下面各題,能簡算的用簡算,計算下面各題,能簡算的要簡算
樂為人師 1.1785 17 98 105 100 2 203 2.3.2 6.8 0.17 2.5 3.2 40 2.5 3.2 2.5 40 2.5 8 100 108 3.1.7 4.8 5.2 1.7 1.7 4.8 5.2 1.7 10 174.8.3 1.9 5.3 4.6 8.3 5....
用簡便方法計算下面各題(1)2 9 0 45 0 29 4 2
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