1樓:媬廏伋
(zhi1)1.3+0.94+0.06+7.7,dao=(1.3+7.7)+(0.94+0.06),=9+1,
=10;
(2)6.27÷0.3+3,
=20.9+3,
=23.9;
(3)12.5×
專0.48×0.8,
=(12.5×0.8)×屬0.48,
=10×0.48,
=4.8;
(4)5.2×[(1.3+2.1)÷0.2],=5.2×[3.4÷0.2],
=5.2×17,
=88.4.
計算下面各題,能簡便的要用簡便方法計算. 1.3+0.94+0.06+7.7 6.27÷0.3+3 12.5×0.48
2樓:你大爺
(1)1.3+0.94+0.06+7.7,=(1.3+7.7)+(0.94+0.06),=9+1,
=10;
(2)6.27÷0.3+3,
=20.9+3,
=23.9;
(3)12.5×0.48×0.8,
=(12.5×0.8)×0.48,
=10×0.48,
=4.8;
(4)5.2×[(1.3+2.1)÷0.2],=5.2×[3.4÷0.2],
=5.2×17,
=88.4.
計算下面各題.(能簡便的要用簡便方法計算)2.3+3.91÷(22-19.7)21.6÷[64.8-(48.6-2.7×2)]0.25×0
3樓:手機使用者
(1)2.3+3.91÷(22-19.7)=2.3+3.91÷2.3
=2.3+1.7
=4(2)21.6÷[64.8-(48.
6-2.7×2)]=21.6÷[64.
8-(48.6-5.4)]=21.
6÷[64.8-43.2]
=21.6÷21.6
=1(3)0.25×0.03×4
=(0.25×4)×0.03
=1×0.03
=0.03
0.13×3.89+0.13×5.11
=0.13×(3.89+5.11)
=0.13×9
=1.17
(5)10.1×87
=(10+0.1)×87
=10×87+0.1×87
=870+8.7
=878.7
下面各題,能簡算的要用簡便方法計算.2.9+0.46+7.1+0.54 ...
4樓:二邁镸
①2.9+0.46+7.1+0.54
=(du2.9+7.1)+(0.46+0.54)=10+1
=11;zhi
②(31.6-11.7)÷2.5÷0.4
=19.9÷(2.5×
dao0.4)
=19.9÷1
=19.9;
③0.4×37×25
=37×(0.4×25)
=37×10
=370;
④內4.97÷1.25+3.03×8
=4.97÷10
8+3.03×8
=0.497×8+3.03×8
=(0.497+3.03)×容8
=3.527×8
=28.216.
計算下列各題,能用簡便方法的要用簡便方法計算.(1)3.25×0.45+6.75×0.45(2)9.07-22.78÷3.4(3)7
5樓:匿名使用者
(1)3.25×
源0.45+6.75×bai0.45
=(du3.25+6.75)×zhi0.45=10×0.45
=4.5;
(2)9.07-22.78÷3.4
=9.07-6.7
=2.37;
(3)7.5×102
=7.5×(dao100+2)
=7.5×100+7.5×2
=750+15
=765;
(4)5.64÷0.125÷8
=5.64÷(0.125×8)
=5.64÷1
=5.64;
(5)16×0.7×2.5
=4×4×0.7×2.5
=(4×0.7)×(2.5×4)
=2.8×10
=28;
(6)3.7×2.8+85.64
=10.36+85.64
=96.
計算下面各題,能簡便計算的要簡便計算.①26.7+3.3×1.2+0.04 ②4.8×12.5×0.8 ③2.5×(6+9.728÷3.2
6樓:鬆阪
(1)26.7+3.3×
1.2+0.04
=26.7+3.96+0.04,
=26.7+(3.96+0.04),
=26.7+4,
=30.7;
(2)4.8×12.5×0.8
=0.8×12.5×4.8,
=10×4.8,
=48;
(3)2.5×(6+9.728÷3.2)
=2.5×(6+3.04),
=2.5×9.04,
=2.5×(10-0.06),
=2.5×10-2.5×0.06,
=25-0.15,
=24.85;
(4)24×10.2
=24×(10+0.2),
=24×10+24×0.2;
=240+4.8,
=244.8;
(5)6.3÷(2.1×2)
=6.3÷2.1÷2,
=3÷2,
=1.5;
(6)100.8÷[(10.79+6.49)÷4.8]=100.8÷[17.28÷4.8],
=100.8÷3.6,
=28.
計算下面各題(能簡便計算的要簡便計算).(1)12×(124-85)÷26(2)5.5×17.3+6.7×5.5(3) 7
7樓:懷念ck°藈酹
(1)抄12×(124-85)÷26
=12×39÷26,
=468÷26,
=18;
(2)5.5×17.3+6.7×5.5
=(17.3+6.7)×5.5,
=24×5.5,
=132;
(3)7
13+5 6
+613
+1 6
=(713
+613
)+(5 6
+1 6
),=1+1,
=2;(4)1-3
13÷9
26-1 5
=1-2 3
-1 5
,=1 3
-1 5
,=215.
計算下面各題,能簡便的最好用簡便方法計算.4.1÷0.41+22.5 &...
8樓:手機使用者
①bai4.1÷0.41+22.5
=10+22.5
=32.5
②2.01×
du99+2.01
=2.01×(
zhi99+1)
=2.01×100
=201
③5.6×3.9+3.9×4.4
=3.9×(5.6+4.4)
=3.9×10
=39④dao6.9×1.25×0.8
=6.9×(1.25×0.8)
=6.9×1
=6.9
計算下面各題,能用簡便方法的要用簡便方法計算. 1.25×32×2.5 7.54-0.9×6-2.36 10.1×3.4 8
9樓:橙
(1)1.25×32×2.5,
專=1.25×8×4×2.5,
=(1.25×8)×屬(4×2.5),
=10×10,
=100;
(2)7.54-0.9×6-2.36,
=7.54-5.4-2.36,
=2.41-2.36,
=0.05;
(3)10.1×3.4,
=(10+0.1)×3.4,
=34+0.34,
=34.34;
(4)8÷0.9÷4.1,
=8÷(0.9×4.1),
=8÷3.69,
=800
369;
(5)7.28+27.2÷4,
=7.28+6.8,
=14.08;
(6)3.6×5.2+4.8×3.6,
=3.6×(5.2+4.8),
=3.6×10,
=36.
計算下面各題,能簡算的要用簡便方法計算
54.9 0.38 54.9 0.4 0.02 21.96 1.098 20.862 4.05 37.85 41.9 1.25 0.7 0.8 1.25 0.8 0.7 0.7 9.8 25 25 2 4.9 245 6.1 3.6 3.6 3.9 3.6 6.1 3.9 362.96 40 3 0...
計算下面各題,怎樣簡便就怎樣算,計算下面各題,怎樣簡便就怎樣算 1 29 3 7 0 71 6 3 23 4 8 54 1 46 6 75 0 5 4
1 1.29 3.7 0.71 6.3,1.29 0.71 3.7 6.3 2 10,12 2 23.4 8.54 1.46,23.4 8.54 1.46 23.4 10,13.4 3 6.75 0.5 4.86,3.375 4.86,8.235 4 19 3.6 3.6 9,3.6 19 9 3....
用簡便方法計算下列各題,用簡便方法計算下面各題 59 38 17
12.45 565 12.45 565 12.45 565 2.45 560 12.45 565 2.45 560 12.45 560 5 2.45 560 12.45 560 12.45 5 2.45 560 12.45 560 2.45 560 12.45 5 10 560 12.45 10 2...