知识大全 计算(能简算的要简算,并写出简算过程).(23+215)×45 (100-19)÷(1.63+1.07) 18.7-3.375-6.
Posted 过程
篇首语:读书志在圣贤,为官心存君国。本文由小常识网(cha138.com)小编为大家整理,主要介绍了知识大全 计算(能简算的要简算,并写出简算过程).(23+215)×45 (100-19)÷(1.63+1.07) 18.7-3.375-6.相关的知识,希望对你有一定的参考价值。
计算(能简算的要简算,并写出简算过程).(23+215)×45 (100-19)÷(1.63+1.07) 18.7-3.375-6.
①(
2 |
3 |
+
2 |
15 |
)×45,
=
2 |
3 |
×45+
2 |
15 |
×45,
=30+6,
=36;
②(100-19)÷(1.63+1.07),
=81÷2.7,
=30;
③18.7-3.375-6.625,
=18.7-(3.375+6.625),
=18.7-10,
=8.7;
④6+
2 |
3 |
÷
1 |
3 |
×
3 |
4 |
,
=6+
2 |
3 |
×3×
3 |
4 |
,
=6+
3 |
2 |
,
=
15 |
2 |
.
计算题。 能简算就简算,并写出简算过程。
(1)=6.7×﹙6.7+2.3+1﹚
=6.7×10
=67
(2)=0.65×(14+87-1)
=0.65×100
=65
(3)=2/3×24-1/2×24+1/6×24
=16-12+4
=8
望采纳.谢谢
能简算的简算、主要写出简算过程
8*1.25+0.8*1.25*0.08*1.25=11.1
2. (96+1)(2008-1)-96*2008=96*2008+2008-96-96*2008=1912
3. =(0.25+0.75)÷(2.5*0.4+1.8÷1.8)=1÷2=0.5
4.(132+127)*29+(37+34)*259=259*29+71*259=259*(29+71)=25900
5.=1/12/5/12-1/4/5/12-1/5=□-2/3
=0.2+0.6-0.2=□-2/3
3/5+2/3=□
□=19/15
6.慢车速度是快车的3/4,说明慢车速度和快车的比是3:4
在时间相等的情况下,速度与路程成正比
所以路程比也是3:4
在离中点5千米处相遇,说明,快车比慢车多走了:5×2=10千米
相遇时快车行驶:10÷(4-3)×7=70千米
路程=(70-5)*2=130千米
7.设百位数子为X
X+3/2X+(2X-1)=17
X=4
4*3/2=6
2*4-1=7
准考证号是476
脱式计算(能简算的要简算,并写出主要过程)125×45×16 0.4÷23+1.6÷...
①125×45×16
=(125×8)×(45×2)
=1000×90
=90000
②0.4÷
2 |
3 |
+1.6÷
2 |
3 |
=(0.4+1.6)×
3 |
2 |
=2×
3 |
2 |
=3
③
4 |
5 |
×
2 |
7 |
+
1 |
5 |
÷
3 |
21 |
=
4 |
5 |
×
2 |
7 |
+
1 |
5 |
×7
=
8 |
35 |
+
49 |
35 |
=
57 |
35 |
④5.6×
3 |
8 |
+0.375×5.4-37.5%
=5.6×0.375+0.375×5.4-0.375
=0.375×(5.6+5.4-1)
=0.375×10
=3.75
⑤21-(
3 |
7 |
+
1 |
3 |
)×
5 |
16 |
=21-
16 |
21 |
×
5 |
16 |
=21-
5 |
21 |
=20
16 |
21 |
简算,并写出简算过程。
23-12/17-5/17
=23-1
=22
44×(5/11+3/4)
=44×5/11+44×3/4
=20+33
=53
7.5×46.7+52.3×7.5+7.5
=7.5×(46.7+52.3+1)
=7.5×100
=750
脱式计算,能简算的要写出简算过程. (8-10× 4 5 )÷ 1 5 19-19× 1
(1)(8-10×
4 |
5 |
)÷
1 |
5 |
=(8-8)÷
1 |
5 |
,
=0÷
1 |
5 |
,
=0;
(2)19-19×
19 |
20 |
=(1-
19 |
20 |
)×19,
=
1 |
20 |
×19,
=
19 |
20 |
;
(3)
5 |
11 |
-0.8+
6 |
11 |
=
5 |
11 |
+
6 |
11 |
-0.8,
=1-0.8,
=0.2;
(4)35÷[(
5 |
6 |
?
2 |
3 |
)×3]
=35÷[
1 |
6 |
×3],
=35÷
1 |
2 |
,
=70.
能简算的要简算,并写出简算过程.(1)[5.3-(4.98-5710)-1150]÷25% &n...
(1)[5.3-(4.98-5
7 |
10 |
)-1
1 |
50 |
]÷25%,
=[5.3-(4.98-5.7)-1.02]÷0.25,
=[5.3-4.98+5.7-1.02]÷0.25,
=[5.3+5.7-(4.98+1.02)]÷0.25,
=[11-6]÷0.25,
=5÷0.25,
=20;
(2)1999÷1999
1999 |
2000 |
,
=1999÷
1999×2000+1999 |
2000 |
,
=1999×
2000 |
1999×2000+1999 |
,
=1999×
2000 |
1999×(2000+1) |
,
=
2000 |
2001 |
;
(3)48%÷[3-(5.55×1
2 |
5 |
-2.1÷
2 |
5 |
)],
=0.48÷[3-(5.55×
7 |
5 |
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;
(4)3
4 |
5 |
×1234+7777÷
35 |
186 |
+543.2×38,
=3.8×1234+7777×
186 |
35 |
+5432×3.8,
=(1234+5432)×3.8+1111×
186 |
5 |
,
=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
递等式计算.(能简算的要简算,并写出主要的简算过程)①79+38+58+29 &nb...
①
7 |
9 |
+
3 |
8 |
+
5 |
8 |
+
2 |
9 |
,
=(
7 |
9 |
+
2 |
9 |
)+(
3 |
8 |
+
5 |
8 |
),
=1+1,
=2;
②
3 |
5 |
÷[1-(
1 |
5 |
-
1 |
10 |
)],
=
3 |
5 |
÷[1-
1 |
10 |
],
=
3 |
5 |
÷
9 |
10 |
,
=
2 |
3 |
;
③0.7×1.25×8,
=0.7×(1.25×8 ),
=0.7×10,
=7;
④(4.2-3.52÷1.6)×1.5,
=(4.2-2.2)×1.5,
=2×1.5,
=3;
⑤2.5×99+2.5,
=2.5×(99+1),
=2.5×100,
=250.
计算,能简算的要简算,并写出主要主要过程。
(1)9分之7+8分之3+8分之5+9分之2
=(7/9+2/9)+(3/8+5/8)
=1+1
=2
(2).0.7×1.25×8
=0.7x10
=7
(3)(4.2-3.52÷1.6)×1.5
=(4.2-2.2)x1.5
=2x1.5
=3
(4)2.5×99+2.5
=2.5x(99+1)
=2.5x100
=250
相关参考
知识大全 计算下面各题(能简算的要简算)25×18×4 25×(40+7) 18×56+44×18 201×41 38×99+38 101×
计算下面各题(能简算的要简算)25×18×425×(40+7)18×56+44×18201×4138×99+38101×(1)25×18×4,=25×4×18,=100×18,=1800;(2)25×
知识大全 用脱式计算下面各题(能简算的要简算). 6760÷13+17×25 0.25+57+6.75+27 3763÷7+2663×17 63÷[3
用脱式计算下面各题(能简算的要简算).6760÷13+17×250.25+57+6.75+273763÷7+2663×1763÷[3(1)6760÷13+17×25,=520+425,=945;(2)
计算57*98%+0.57*2能简算要简算57*98%+0.57*2=57%*98+57%*2=57%*(98+2)=57计算(能简算的要简算)0.38╳99+0.38=0.38X(99十1)=0.3
知识大全 3x十;三分之八二十四能简算的要简算求解这道题怎么做
3x十;三分之八二十四能简算的要简算求解这道题怎么做?3x+8/3=143x=14-8/33x=34/3x=34/94.5x5.7+5.7x5.5这道题怎么简算求求教师4.5x5.7+5.7x5.5=
知识大全 计算下面各题,能简算的要用简便方法计算.(1)0.75×99+0.75 (2)56-(23-16) (3)(8.5-4)×(0
计算下面各题,能简算的要用简便方法计算.(1)0.75×99+0.75(2)56-(23-16)(3)(8.5-4)×(0(1)0.75×99+0.75=0.75×(99+1),=75;(2)56-(
知识大全 计算下面各题,能简算的要用简便方法计算. 40.2-4÷80×2.4 34×(117+113)×13 3.9-5.7+7
计算下面各题,能简算的要用简便方法计算.40.2-4÷80×2.434×(117+113)×133.9-5.7+7(1)40.2-4÷80×2.4,=40.2-0.05×2.4,=40.2-0.12,
计算下列各题,(能简算的要简算)。谢谢,要过程,有些麻烦你打,答得好的我马上采纳。急!6÷7分之6-7分之6÷6=6×6分之7+7分之6×6分之1=7+7分之1=7又7分之18分之3÷5+0.375÷
知识大全 计算,能简算的用简便方法计算.375+450÷18×20 &.
计算,能简算的用简便方法计算.375+450÷18×20&...,计算,能简算的用简便方法计算.375+450÷18×209.47+0.58-2.47710×8.4+1.6×0.7(1)375
知识大全 10又14分之3减(2又14分之3加3.9)能简算要简算
10又14分之3减(2又14分之3加3.9)能简算要简算10又14分之3减(2又14分之3加3.9)能简算要简算10又14分之3减(2又14分之3加3.9)=10+3/14-2-3/14-3.9=4.
知识大全 计算下面各题,能简算的用简便方法计算2272-6360÷24[6.85-(0.65+0.7)]÷2.5(910-45×58)÷512 &n
计算下面各题,能简算的用简便方法计算2272-6360÷24[6.85-(0.65+0.7)]÷2.5(910-45×58)÷512&n(1)2272-6360÷24=2272-265,=20