五年级简便计算题100道 计算下列各题(能用简便方法的用简便方法计算)0.125×8.75×81.8÷0.5÷0.612.75÷[14.6-(1.3+8.2)
计算下列各题(能用简便方法的用简便方法计算)0.125×8.75×81.8÷0.5÷0.612.75÷[14.6-(1.3+8.2)
计算下列各题(能用简便方法的用简便方法计算)0.125×8.75×81.8÷0.5÷0.612.75÷[14.6-(1.3+8.2)
(1)0.125×8.75×8
=0.125×8×8.75
=1×8.75
=8.75;
(2)1.8÷0.5÷0.6
=1.8÷(0.5×0.6)
=1.8÷0.3
=6;
(3)12.75÷[14.6-(1.3+8.2)]
=12.75÷[14.6-9.5]
=12.75÷5.1
=2.5;
(4)0.7×10.1
=0.7×(10+0.1)
=0.7×10+0.7×0.1
=7+0.07
=7.07;
(5)0.5x-7=28
0.5x-7+7=28+7
0.5x=35
0.5x÷0.5=35÷0.5
x=70;
(6)2.1x-x=1.21
1.1x=1.21
1.1x÷1.1=1.21÷1.1
x=1.1.
计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算.①840÷24+25 ②14.4÷8÷0.125
①840÷24+25=35+25,
=60;②14.4÷8÷0.125
=14.4÷(8×0.125),
=14.4÷1,
=14.4;
③26.5÷(1.65+0.85)
=26.5÷2.5,
=10.6;
④
7 8-
5 12+
1 6=
11 24+
1 6,
=
;
⑤ 48×(
11 12-
3 4+
1 6)
=48×
-48×
3 4+48×
1 6,
=44-36+8,
=16;
⑥
1 5÷[1-(
1 5+
1 7)].
=
÷[1-
12 35],
=
÷
23 35,
=
.
计算下列各题.(能用简便方法的要用简便方法)(1)(?3.25)+3.75+14+2.5+334+(?412)(2)(?235)+(+314)+
(1)原式=-3.25+3.75+0.25+2.5+3.75-4.5=2.5;
(2)原式=?2
3 5+3
1 4?3
2 5+2

3 4
?1
1 2?1
1 3=(-2-
3 5-3-
2 5)+(3+
1 4+2+
3 4)-1-
1 2-1-
1 3=-6+6-2-
1 2-
1 3=-
17 6.
计算下列各题,能用简便方法的要用简便方法.(0.32÷16+1.08)÷22 9.4×14+0.25×351...
(1)(0.32÷16+1.08)÷22
=(0.02+1.08)÷22
=1.1÷22
=0.05;
(2)9.4×
1 4+0.25×
3 5=(9.4+
3 5)×0.25
=10×0.25
=2.5;
(3)
1 3×4.5×(0.75+1
1 4)
=
×4.5×2
=1.5×2
=3;
(4)576×160%+424×1
3 5=(576+424)×160%
=1000×160%
=1600.
用简便方法计算下列各题。
999×778+333×666
=999×778+333×(3×222)
=999×778+333×3×222
=999×778+999×222
=999×(778+222)
=999×1000
=999000
20012001/19971997
=10001×2001/1997×1001
=2001/1997
20022002/20012001
=2002/2001 演算法请参考上题。
97*2000-96*2001
=96×2000+2000-96×2001
=96×(2000-2001)+2000
=2000-96
=1904
不会请发百度讯息。
125*17*8=125*8*17=1000*17=17000
(25+16)*4=25*4+16*4=100+64=164
46*37+54*37=(46+54)*37=100*37=3700
102*35=(100+2)*35=100*35+2*35=3500+70=3570
计算下列各题.(能用简便方法的要用简便方法)(1)(-2d)+(+d一)+(-她9)(2)(-1.9)+她.一+(-1
(1)原式=-25-39+56=-64+56=-8;
(2)原式=-1.9-10.1+3.6+1.4=-12+5=-3;
(3)原式=-26-8+15+30=-34+45=11;
(4)原式=-2.4-3.3+0.3+4.2-4.2=-2.4-3+0=-5.4;
(5)原式=
-
1 3+
3 4-
1 4+
18 19=
1 2+
18 19=
55 38;
(6)原式=-3
-16
4 3+12.5-2.5=-20+10=-10.
计算下列各题:(用简便方法算)
45×18
=45×(2×9)
=(45×2)×9
=90×9
=810
125×28
=125×(4×7)
=(125×4)×7
=500×7
=3500
3333×666
=3333×(3×222)
=(3333×3)×222
=9999×222
=(10000-1)×222
=10000×222-1×222
=2220000-222
=2219778
23×666+54×333
=23×(2×333)+54×333
=(23×2)×333+54×333
=46×333+54×333
=333×(46+54)
=333×100
=33300
118×43-86×9
=118×43-(43×2)×9
=118×43-43×(2×9)
=118×43-43×18
=43×(118-18)
=43×100
=4300
98+49×48
=49×2+49×48
=49×(2+48)
=49×50
=2450
计算下列各题,能用简便演算法的用简便演算法。
太多了吧
(3/4-1/6)÷(11/12+1/3)
=(9/12-2/12)÷(11/12+4/12)
=(7/12)÷(15/12)
=7/15
1+(1/4+3/8)÷1/4
=1+1/4÷1/4+3/8÷1/4
=1+1+3/2
=7/2
55×7/54
=(54+1)×7/54
=54×7/54+1×7/54
=7+7/54
=7又7/54
剩下的
采纳我,重新问