1、56+31+24
2、615+475+125
3、125×64
4、 89+101+111
5、24+127+476+573
6、400-273-127
7、327+(96-127)
8、70×98
9、442-103-142
10、999+99+9
11、67×5×2
12、25×(78×4)
13、72×125
14、9000÷125÷8
15、400÷25
16、25×36
17、103×27
18、76×102
19、3600÷25÷4
20、99×35
21、(25+12)×4
22、56×27+27×44
23、56×99+56
24、125×25×8×4
25、25×32×125
附答案
1、56+31+24 =(56+24)+31 =80+31 =111
2、615+475+125 =615+(475+125) =615+600 =1215
3、125×64 =125×8×8 =1000×8 =8000
4、 89+101+111 =101+(89+111) =101+200 =301
5、24+127+476+573 =(24+476)+(127+573) =500+700 =1200 6、400-273-127 =400-(273+127) =400-400 =0
7、327+(96-127) =327-127+96 =200+96 =296
8、70×98 =70×(100-2) =7000-140 =6860 9、
442-103-142 =442-142-103 =300-103 =197
10、999+99+9 =1000+100+10-3 =1110-3 =1107
11、67×5×2 =67×(5×2) =67×10 =670
12、25×(78×4) =25×4×78 =100×78 =7800
13、72×125 =9×(8×125) =9×1000 =9000
14、9000÷125÷8 =9000÷(125×8) =9000÷1000 =9
15、400÷25 =400÷100×4 =4×4 =16
16、25×36 =25×4×9 =100×9 =900
17、103×27 =(100+3)×27 =2700+81 =2781
18、76×102 =76×(100+2) =7600+152 =7752
19、3600÷25÷4 =3600÷(25×4) =3600÷100 =36
20、99×35 =(100-1)×35 =3500-35 =3465
21、(25+12)×4 =25×4+12×4 =100+48 =148
22、56×27+27×44 =(56+44)×27 =100×27 =2700
23、56×99+56 =56×(99+1) =56×100 =5600
24、125×25×8×4 =125×8×(25×4) =1000×100 =100000
25、25×32×125 =(25×4)×(8×125) =100×1000 =100000
五年级上册简便算法题
10÷3.14-6.86÷3.14
37.68÷0.25÷4
3.75-(2.75-1.3)
37.56-(18+7.56) 0.77÷14
4.5×9.8
0.7÷0.125
0.7÷0.25
2.5×3.2×12.5
12.5×9.6×0.25
3.75-(2.8-1.25)
37.65÷0.4÷0.25
3.125÷8÷0.125
37.65-4.75-3.25
25×6.4×12.5
3.6×0.25
答案
10÷3.14-6.86÷3.14 =(10-6.86)÷3.14 =3.14÷3.14 =1
37.68÷0.25÷4 =37.68÷(0.25×4) =37.68÷1 =37.68
3.75-(2.75-1.3) =3.75-2.75+1.3 =1+1.3 =2.3
37.56-(18+7.56) =37.56-7.56-18 =30-18 =12 0.77÷14 =0.77÷7÷2 =0.11÷2 =0.055 4.5×9.8
=4.5×(10-0.2) =4.5×10-4.5×0.2 =45-0.9 =44.1 0.7÷0.125
=(0.7×8)÷(0.125×8) =0.56÷1 =0.56 0.7÷0.25
=(0.7×4)÷(0.25×4) =2.8÷1 =2.8
2.5×3.2×12.5 =(2.5×0.4)×(8×12.5) =1×100 =100
12.5×9.6×0.25
=(12.5×0.8)×3×(4×0.25) =10×3×1 =30
3.75-(2.8-1.25) =3.75+1.25-2.8
=5-2.8 =2.2
37.65÷0.4÷0.25 3.125÷8÷0.125 37.65-4.75-3.25 25×6.4×12.5 =25×4×0.2×8×12.5 3.6×0.25 =(4-0.4)×0.25 3.4÷9+5.6÷9 = 12.5×32×25 0.36×99+0.36
4×5.6×25 3.12+8.56+6.88+1.44
27.5×3.7-7.5×3.7 125×88
0.36×101 15.6×13.1-12.1×15.6
32.4×0.9+0.1×32.4 25×44
18×12.2+7.8×18 7.8×99+7.8
1、24.6-3.98+5.4-6.02
解析:此题利用加法交换结合律,凑整再计算。步骤如下:
24.6-3.98+5.4-6.02
=(24.6+5.4)-(3.98+6.02)
=30-10
=20
2、27×17/26
解析:此题先用加法分配律,把27转换成(26+1),再利用乘法结合律,使得运算简便。
27×17/26
=(26+1)×17/26
=26×17/26+1×17/26
(1)2.5*32*0.125
=(2.5*4)*(8*0.125)
=10*1
=10
(2)3.5-7+6.5
=3.5+6.5-7
=3
(3)1.2×2.5+0.8×2.5
=2.5(1.2+0.8)
=25
(4)8.9×1.25-0.9×1.25
=1.25(8.9-0.9)
=10
(5)12.5×7.4×0.8
=12.5×0.8×7.4
=74
(6)6.5×9.5+6.5×0.5
=6.5×(9.5+0.5)
=6.5×10
=65
(7)0.35×1.6+0.35×3.4
=0.35*(1.6+3.4)
=0.35*5
=1.75
(8)6.72-3.28-1.72
=6.75-(3.28+1.72)
=6.75-5
=1.75
(9)0.45+6.37+4.55
=0.45+4.55+6.37
=5+6.37
=11.37
(10)28×12.5-12.5×20
=(28-20)*12.5
=8*12.5
=100
(11)23.65-(3.07+3.65)
=23.65-3.65-3.07
=20-3.07
=16.93
(12)(4+0.4×0.25)8×7×1.25
=(4+1)*7*10
=5*7*10
=350
(13)1.65×99+1.65
=1.65*(99+1)
=1.65*100
=165
(14)27.85-(7.85+3.4)
=27.85-7.85+3.4
=20+3.4
=23.4
(15)48×1.25+50×1.25×0.2×8
7.8×9.9+0.78
=7.8*(9.9+0.1)
=7.8*10
=78
(16)4.8×46+4.8×54
=(46+54)*4.8
=100*4.8
=480
(17)673-327-173
=673-(327+173)
=673-500
=173
(18)4.44*2.5
=1.11*(4*2.5)
=1.11*10
=11.1
(19)3.5÷1.4
=(3.5÷0.7)÷(1.4÷0.7)
=5÷2
=2.5
(20)1+2+3+4+5……+99+100
=(1+99)+(2+98)+(3+97)+.+(49+51)+50
=(100÷2-1)*100+50
=4900+50
=4950
1、56+31+24
2、615+475+125
3、125×64
4、 89+101+111
5、24+127+476+573
6、400-273-127
7、327+(96-127)
8、70×98
9、442-103-142
10、999+99+9
11、67×5×2
12、25×(78×4)
13、72×125
14、9000÷125÷8
15、400÷25
16、25×36
17、103×27
18、76×102
19、3600÷25÷4
20、99×35
21、(25+12)×4
22、56×27+27×44
23、56×99+56
24、125×25×8×4
25、25×32×125
附答案
1、56+31+24 =(56+24)+31 =80+31 =111
2、615+475+125 =615+(475+125) =615+600 =1215
3、125×64 =125×8×8 =1000×8 =8000
4、 89+101+111 =101+(89+111) =101+200 =301
5、24+127+476+573 =(24+476)+(127+573) =500+700 =1200 6、400-273-127 =400-(273+127) =400-400 =0
7、327+(96-127) =327-127+96 =200+96 =296
8、70×98 =70×(100-2) =7000-140 =6860 9、
442-103-142 =442-142-103 =300-103 =197
10、999+99+9 =1000+100+10-3 =1110-3 =1107
11、67×5×2 =67×(5×2) =67×10 =670
12、25×(78×4) =25×4×78 =100×78 =7800
13、72×125 =9×(8×125) =9×1000 =9000
14、9000÷125÷8 =9000÷(125×8) =9000÷1000 =9
15、400÷25 =400÷100×4 =4×4 =16
16、25×36 =25×4×9 =100×9 =900
17、103×27 =(100+3)×27 =2700+81 =2781
18、76×102 =76×(100+2) =7600+152 =7752
19、3600÷25÷4 =3600÷(25×4) =3600÷100 =36
20、99×35 =(100-1)×35 =3500-35 =3465
21、(25+12)×4 =25×4+12×4 =100+48 =148
22、56×27+27×44 =(56+44)×27 =100×27 =2700
23、56×99+56 =56×(99+1) =56×100 =5600
24、125×25×8×4 =125×8×(25×4) =1000×100 =100000
25、25×32×125 =(25×4)×(8×125) =100×1000 =100000
五年级上册简便算法题
10÷3.14-6.86÷3.14
37.68÷0.25÷4
3.75-(2.75-1.3)
37.56-(18+7.56) 0.77÷14
4.5×9.8
0.7÷0.125
0.7÷0.25
2.5×3.2×12.5
12.5×9.6×0.25
3.75-(2.8-1.25)
37.65÷0.4÷0.25
3.125÷8÷0.125
37.65-4.75-3.25
25×6.4×12.5
3.6×0.25
答案
10÷3.14-6.86÷3.14 =(10-6.86)÷3.14 =3.14÷3.14 =1
37.68÷0.25÷4 =37.68÷(0.25×4) =37.68÷1 =37.68
3.75-(2.75-1.3) =3.75-2.75+1.3 =1+1.3 =2.3
37.56-(18+7.56) =37.56-7.56-18 =30-18 =12 0.77÷14 =0.77÷7÷2 =0.11÷2 =0.055 4.5×9.8
=4.5×(10-0.2) =4.5×10-4.5×0.2 =45-0.9 =44.1 0.7÷0.125
=(0.7×8)÷(0.125×8) =0.56÷1 =0.56 0.7÷0.25
=(0.7×4)÷(0.25×4) =2.8÷1 =2.8
2.5×3.2×12.5 =(2.5×0.4)×(8×12.5) =1×100 =100
12.5×9.6×0.25
=(12.5×0.8)×3×(4×0.25) =10×3×1 =30
3.75-(2.8-1.25) =3.75+1.25-2.8
=5-2.8 =2.2
37.65÷0.4÷0.25 3.125÷8÷0.125 37.65-4.75-3.25 25×6.4×12.5 =25×4×0.2×8×12.5 3.6×0.25 =(4-0.4)×0.25 3.4÷9+5.6÷9 = 12.5×32×25 0.36×99+0.36
4×5.6×25 3.12+8.56+6.88+1.44
27.5×3.7-7.5×3.7 125×88
0.36×101 15.6×13.1-12.1×15.6
32.4×0.9+0.1×32.4 25×44
18×12.2+7.8×18 7.8×99+7.8
1、24.6-3.98+5.4-6.02
解析:此题利用加法交换结合律,凑整再计算。步骤如下:
24.6-3.98+5.4-6.02
=(24.6+5.4)-(3.98+6.02)
=30-10
=20
2、27×17/26
解析:此题先用加法分配律,把27转换成(26+1),再利用乘法结合律,使得运算简便。
27×17/26
=(26+1)×17/26
=26×17/26+1×17/26
(1)2.5*32*0.125
=(2.5*4)*(8*0.125)
=10*1
=10
(2)3.5-7+6.5
=3.5+6.5-7
=3
(3)1.2×2.5+0.8×2.5
=2.5(1.2+0.8)
=25
(4)8.9×1.25-0.9×1.25
=1.25(8.9-0.9)
=10
(5)12.5×7.4×0.8
=12.5×0.8×7.4
=74
(6)6.5×9.5+6.5×0.5
=6.5×(9.5+0.5)
=6.5×10
=65
(7)0.35×1.6+0.35×3.4
=0.35*(1.6+3.4)
=0.35*5
=1.75
(8)6.72-3.28-1.72
=6.75-(3.28+1.72)
=6.75-5
=1.75
(9)0.45+6.37+4.55
=0.45+4.55+6.37
=5+6.37
=11.37
(10)28×12.5-12.5×20
=(28-20)*12.5
=8*12.5
=100
(11)23.65-(3.07+3.65)
=23.65-3.65-3.07
=20-3.07
=16.93
(12)(4+0.4×0.25)8×7×1.25
=(4+1)*7*10
=5*7*10
=350
(13)1.65×99+1.65
=1.65*(99+1)
=1.65*100
=165
(14)27.85-(7.85+3.4)
=27.85-7.85+3.4
=20+3.4
=23.4
(15)48×1.25+50×1.25×0.2×8
7.8×9.9+0.78
=7.8*(9.9+0.1)
=7.8*10
=78
(16)4.8×46+4.8×54
=(46+54)*4.8
=100*4.8
=480
(17)673-327-173
=673-(327+173)
=673-500
=173
(18)4.44*2.5
=1.11*(4*2.5)
=1.11*10
=11.1
(19)3.5÷1.4
=(3.5÷0.7)÷(1.4÷0.7)
=5÷2
=2.5
(20)1+2+3+4+5……+99+100
=(1+99)+(2+98)+(3+97)+.+(49+51)+50
=(100÷2-1)*100+50
=4900+50
=4950