小学四年级简便计算题大全及答案
答案:3 悬赏:10 手机版
解决时间 2021-02-06 22:49
- 提问者网友:临风不自傲
- 2021-02-05 22:42
小学四年级简便计算题大全及答案
最佳答案
- 五星知识达人网友:旧脸谱
- 2021-02-06 00:11
交换律;
结合律;
乘法分配律;
提取公因式;
拆分法。
1.交换律:
256+78-56=256-56+78=200+78=278
450×9÷50=450÷50×9=9×9=81
2.结合律:
73+58+27+42=(73+27)+(58+42)=100+100=200
345-67-33=345-(67+33)=345-100=245 789-133+33=789-(133-33)=789-100=689
510÷17 ÷3=51÷(17×3)=510÷51=10 1200÷48×4=1200÷(48÷4)=1200÷12=100
3.乘法分配律:
74 x (10+5)=74 x 10+74 x 5=740+370=1100
45×(10+2)=45×10+45×2=450+90=540
4.提取公因式:
35×78+22×35=35×(78+22)=35×100=3500
28 x 62+38 x 28=(62+38)x 28=100 x 28=2800
5.拆分法:
32×125×25=8×4×125×25=(8×125)×(4×25)=1000×100=100000
36×25=9×4×25=9×(4×25)=9×100=900
结合律;
乘法分配律;
提取公因式;
拆分法。
1.交换律:
256+78-56=256-56+78=200+78=278
450×9÷50=450÷50×9=9×9=81
2.结合律:
73+58+27+42=(73+27)+(58+42)=100+100=200
345-67-33=345-(67+33)=345-100=245 789-133+33=789-(133-33)=789-100=689
510÷17 ÷3=51÷(17×3)=510÷51=10 1200÷48×4=1200÷(48÷4)=1200÷12=100
3.乘法分配律:
74 x (10+5)=74 x 10+74 x 5=740+370=1100
45×(10+2)=45×10+45×2=450+90=540
4.提取公因式:
35×78+22×35=35×(78+22)=35×100=3500
28 x 62+38 x 28=(62+38)x 28=100 x 28=2800
5.拆分法:
32×125×25=8×4×125×25=(8×125)×(4×25)=1000×100=100000
36×25=9×4×25=9×(4×25)=9×100=900
全部回答
- 1楼网友:逃夭
- 2021-02-06 01:27
引用瀛洲烟雨的回答:
小学四年级简便计算题大全及答案
例1、5.76+13.67+4.24+6.33
=(5.76+4.24)+(13.67+6.33)
=10+10
=20
例2、37.24+23.79-17.24
=37.24-17.24+23.79
=20+23.79
=43.79
例3、 4×3.78×0.25
=4×0.25×3.78
=1×3.78
=3.78
例4、 125×246×0.8
=125×0.8×246
=100×246
=24600
例5、(2.5+12.5)×40
=2.5×40+12.5×40
=100+500
=600
例6、3.68×4.79+6.32×4.79
=(3.68+6.32)×4.79
=10×4.79
=47.9
例7. 26.86×25.66-16.86×25.66
=(26.86-16.86) ×25.66
=10×25.66
=256.6
例8、 5.7×99+5.7
= 5.7×(99+1)
=5.7×100
=570
例9、34×9.9
=34×(10-0.1)
=34×10-34×0.1
=340-3.4
=336.6
例10、 57×101
=57×(100+1)
=57×100+57×1
=5757
例11、7.8×1.1
=7.8×(1+0.1)
=7.8×1+7.8×0.1
=7.8+0.78
=8.58
例12、25×32
=25×4×8
=100×8
=800
例13、125×0.72
=125×8×0.09
=1000×0.09
=90
例14、87×2/85
=(85+2) ×2/85
=85×2/85+2×2/85
=2+4/85
=2又4/85
例15、56.5-3.7-6.3
=56.5-(3.7+6.3)
=56.5-10
=46.5
例16、32.6÷0.4÷2.5
=32.6÷(0.4×2.5)
=32.6÷1
=32.6
例16、86.7×0.356+1.33×3.56
=8.67×3.56+1.33×3.56
=(8.67+1.33)×3.56
=10×3.56
=35.6
例17、15.6÷4-5.6×1/4
=15.6×1/4-5.6×1/4
=(15.6-5.6)×1/4
=10×1/4
=2又1/2
例18、16/23×27+16×19/23
=27/23×16+16×19/23
=16×(27/23+19/23)
=16×2
=32结合国家规划京津冀经济
小学四年级简便计算题大全及答案
例1、5.76+13.67+4.24+6.33
=(5.76+4.24)+(13.67+6.33)
=10+10
=20
例2、37.24+23.79-17.24
=37.24-17.24+23.79
=20+23.79
=43.79
例3、 4×3.78×0.25
=4×0.25×3.78
=1×3.78
=3.78
例4、 125×246×0.8
=125×0.8×246
=100×246
=24600
例5、(2.5+12.5)×40
=2.5×40+12.5×40
=100+500
=600
例6、3.68×4.79+6.32×4.79
=(3.68+6.32)×4.79
=10×4.79
=47.9
例7. 26.86×25.66-16.86×25.66
=(26.86-16.86) ×25.66
=10×25.66
=256.6
例8、 5.7×99+5.7
= 5.7×(99+1)
=5.7×100
=570
例9、34×9.9
=34×(10-0.1)
=34×10-34×0.1
=340-3.4
=336.6
例10、 57×101
=57×(100+1)
=57×100+57×1
=5757
例11、7.8×1.1
=7.8×(1+0.1)
=7.8×1+7.8×0.1
=7.8+0.78
=8.58
例12、25×32
=25×4×8
=100×8
=800
例13、125×0.72
=125×8×0.09
=1000×0.09
=90
例14、87×2/85
=(85+2) ×2/85
=85×2/85+2×2/85
=2+4/85
=2又4/85
例15、56.5-3.7-6.3
=56.5-(3.7+6.3)
=56.5-10
=46.5
例16、32.6÷0.4÷2.5
=32.6÷(0.4×2.5)
=32.6÷1
=32.6
例16、86.7×0.356+1.33×3.56
=8.67×3.56+1.33×3.56
=(8.67+1.33)×3.56
=10×3.56
=35.6
例17、15.6÷4-5.6×1/4
=15.6×1/4-5.6×1/4
=(15.6-5.6)×1/4
=10×1/4
=2又1/2
例18、16/23×27+16×19/23
=27/23×16+16×19/23
=16×(27/23+19/23)
=16×2
=32结合国家规划京津冀经济
- 2楼网友:西风乍起
- 2021-02-06 00:45
小学四年级简便计算题大全及答案
例1、5.76+13.67+4.24+6.33
=(5.76+4.24)+(13.67+6.33)
=10+10
=20
例2、37.24+23.79-17.24
=37.24-17.24+23.79
=20+23.79
=43.79
例3、 4×3.78×0.25
=4×0.25×3.78
=1×3.78
=3.78
例4、 125×246×0.8
=125×0.8×246
=100×246
=24600
例5、(2.5+12.5)×40
=2.5×40+12.5×40
=100+500
=600
例6、3.68×4.79+6.32×4.79
=(3.68+6.32)×4.79
=10×4.79
=47.9
例7. 26.86×25.66-16.86×25.66
=(26.86-16.86) ×25.66
=10×25.66
=256.6
例8、 5.7×99+5.7
= 5.7×(99+1)
=5.7×100
=570
例9、34×9.9
=34×(10-0.1)
=34×10-34×0.1
=340-3.4
=336.6
例10、 57×101
=57×(100+1)
=57×100+57×1
=5757
例11、7.8×1.1
=7.8×(1+0.1)
=7.8×1+7.8×0.1
=7.8+0.78
=8.58
例12、25×32
=25×4×8
=100×8
=800
例13、125×0.72
=125×8×0.09
=1000×0.09
=90
例14、87×2/85
=(85+2) ×2/85
=85×2/85+2×2/85
=2+4/85
=2又4/85
例15、56.5-3.7-6.3
=56.5-(3.7+6.3)
=56.5-10
=46.5
例16、32.6÷0.4÷2.5
=32.6÷(0.4×2.5)
=32.6÷1
=32.6
例16、86.7×0.356+1.33×3.56
=8.67×3.56+1.33×3.56
=(8.67+1.33)×3.56
=10×3.56
=35.6
例17、15.6÷4-5.6×1/4
=15.6×1/4-5.6×1/4
=(15.6-5.6)×1/4
=10×1/4
=2又1/2
例18、16/23×27+16×19/23
=27/23×16+16×19/23
=16×(27/23+19/23)
=16×2
=32
例1、5.76+13.67+4.24+6.33
=(5.76+4.24)+(13.67+6.33)
=10+10
=20
例2、37.24+23.79-17.24
=37.24-17.24+23.79
=20+23.79
=43.79
例3、 4×3.78×0.25
=4×0.25×3.78
=1×3.78
=3.78
例4、 125×246×0.8
=125×0.8×246
=100×246
=24600
例5、(2.5+12.5)×40
=2.5×40+12.5×40
=100+500
=600
例6、3.68×4.79+6.32×4.79
=(3.68+6.32)×4.79
=10×4.79
=47.9
例7. 26.86×25.66-16.86×25.66
=(26.86-16.86) ×25.66
=10×25.66
=256.6
例8、 5.7×99+5.7
= 5.7×(99+1)
=5.7×100
=570
例9、34×9.9
=34×(10-0.1)
=34×10-34×0.1
=340-3.4
=336.6
例10、 57×101
=57×(100+1)
=57×100+57×1
=5757
例11、7.8×1.1
=7.8×(1+0.1)
=7.8×1+7.8×0.1
=7.8+0.78
=8.58
例12、25×32
=25×4×8
=100×8
=800
例13、125×0.72
=125×8×0.09
=1000×0.09
=90
例14、87×2/85
=(85+2) ×2/85
=85×2/85+2×2/85
=2+4/85
=2又4/85
例15、56.5-3.7-6.3
=56.5-(3.7+6.3)
=56.5-10
=46.5
例16、32.6÷0.4÷2.5
=32.6÷(0.4×2.5)
=32.6÷1
=32.6
例16、86.7×0.356+1.33×3.56
=8.67×3.56+1.33×3.56
=(8.67+1.33)×3.56
=10×3.56
=35.6
例17、15.6÷4-5.6×1/4
=15.6×1/4-5.6×1/4
=(15.6-5.6)×1/4
=10×1/4
=2又1/2
例18、16/23×27+16×19/23
=27/23×16+16×19/23
=16×(27/23+19/23)
=16×2
=32
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