‘壹’ 7.3x14.2-4.2可以用地等是算还是简便运算,可以的话能算给我看吗 急需
1.120-36×4÷18+35
2.(58+37)÷(64-9×5)
3.(6.8-6.8×0.55)÷8.5
4.0.12× 4.8÷0.12×4.8
5.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
6.6-1.6÷4= 5.38+7.85-5.37=
7.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
8.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
9.10.15-10.75×0.4-5.7
10.5.8×(3.87-0.13)+4.2×3.74
11.32.52-(6+9.728÷3.2)×2.5
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6
1.8又3分之5减去3又4分之1与1又10分之3的和,差是多少?
2.甲数是4又5分之1,比乙数的5倍少4/5,求乙数。
3.一个数与4又2分之1的和比5.75多2又4分之1,求这个数。
希望对你有帮助!!!
‘贰’ 五年级下册简便运算
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6
‘叁’ 三位数乘以两位数的方法
三位数与两位的个位和个位要对齐,十位数要跟十位数对齐,
先用两位数的个位分别与三位数的每一位数相乘,
在用两位数的十位分别与三位数的每一位数相乘,乘得结果的个位要与前面结果的十位对齐,
然后两个结果相加就得到三位数乘两位数的结果了.
例如:123乘以45
先用5乘以123得615,
再用4乘以123得492,乘得的结果492的2要与前面的结果615的1对齐,
然后两个结果相加615加4920得5635
‘肆’ 三位数乘两位数怎么算 要过程 详细一点的
三位数乘两位数算法:
1、三位数与两位的个位和个位要对齐,十位数要跟十位数对齐。
2、先用两位数的个位分别与三位数的每一位数相乘。
3、在用两位数的十位分别与三位数的每一位数相乘,乘得结果的个位要与前面结果的十位对齐。
4、然后两个结果相加就得到三位数乘两位数的结果了。
‘伍’ 45×127-1896÷24简便计算
简便计算
45×127-1896÷24
=5715-79
=5635
三位数与两位的个位和个位要对齐,十位数要跟十位数对齐,
先用两位数的个位分别与三位数的每一位数相乘,
在用两位数的十位分别与三位数的每一位数相乘,乘得结果的个位要与前面结果的十位对齐,
然后两个结果相加就得到三位数乘两位数的结果了.
‘柒’ 三位数乘两位数的巧妙方法
三位数与两位的个位和个位要对齐,十位数要跟十位数对齐,
先用两位数的个位分别与三位数的每一位数相乘。
在用两位数的十位分别与三位数的每一位数相乘,乘得结果的个位要与前面结果的十位对齐。
然后两个结果相加就得到三位数乘两位数的结果了。
例如:123乘以45
先用5乘以123得615,
再用4乘以123得492,乘得的结果492的2要与前面的结果615的1对齐,
然后两个结果相加615加4920得5635
计算过程中,我们特别要注意每次相乘时积的定位要准确,乘数中间有0时不能漏乘,进位时口算要正确,千万别做小粗心。
相关的两位数乘法速算口诀一般口诀:
首位之积排在前,首尾交叉积之和十倍再加尾数积。如37x64=1828+(3x4+7x6)x10=2368
同尾互补,首位乘以大一数,尾数之积后面接。如:23×27=621
尾同首互补,首位之积加上尾,尾数之积后面接。87×27=2349
首位差一尾数互补者,大数首尾平方减。如76×64=4864
“几十一乘几十一”速算特殊:用于个位是1的平方,如21×21=441
首同尾不同,一数加上另数尾,整首倍后加上尾数积。23×25=575