=7/8+3/8- 1/4
=7/8+ 1/8+ 1/4- 1/4
= 1+0
= 1
2.65438+3 out of 00+15 out of 0/4 out of 5.
=9/30+28/30+24/30
=(9+28+24)/30
=6 1/30
3, 1-2 ( 1-6 1)
= 1/2- 1/2+ 1/6
=0+ 1/6
= 1/6
Score, the meaning of "achievement", such as exam score. Fractional unit, the unit "1" is divided into several parts on average, and the number representing such a part or parts is called a fraction. The number representing this share is called the fractional unit.
Please give some processes and answers for off-line calculation of scores?
The process and answer of calculating 2 1 channel by fractional disjunction is 0.35× 1.6+0.35×3.4.
0.25×8.6×4
6.72-3.28- 1.72
0.45+6.37+4.55
5.4+6.9×3-(25-2.5)2×4 1846-620-380
4.8×46+4.8×54
0.8+0.8×2.5
1.25×3.6×8×2.5- 12.5×2.4
28× 12.5- 12.5×20
23.65-(3.07+3.65)
70+70× 4/5 Off-model Calculation Process and Answers 70+70×4/5
=70+56
= 126
Fraction calculation process and answer1/(a-b)-1/(a+b)+2b/(a? +b？ )=(a+b-a+b)/(a+b)(a-b)+2b/(a？ +b？ )=2b/(a？ -B? )+2b/(a？ +b？ )=2b(a？ +b？ +a？ -B? )/(a？ +b？ )(a？ -B? )=4a？ b/(a^4-b^4)
Off-model calculation and answer (45- 17)+(9-3)=28+6=34.
(45- 17)+(9-6)=28+3=3 1
(45- 18)+(9-3)=27+6=33
(45- 18)+(9-6)=27+3=30
(45-27)+(9-3)= 18+6=24
(45-27)+(9-6)= 18+3=2 1
(45-28)+(9-3)= 17+6=23
(45-28)+(9-6)= 17+3=20
(46- 17)+(8-3)=29+5=34
(46- 17)+(8-5)=29+3=32
(46- 19)+(8-3)=27+5=32
(46- 19)+(8-5)=27+3=30
(46-27)+(8-3)= 19+5=24
(46-27)+(8-5)= 19+3=22
(46-29)+(8-3)= 17+5=22
(46-29)+(8-5)= 17+3=20
(54- 16)+(9-2)=38+7=45
(54- 16)+(9-7)=38+2=40
(54- 18)+(9-2)=36+7=43
(54- 18)+(9-7)=36+2=38
(54-36)+(9-2)= 18+7=25
(54-36)+(9-7)= 18+2=20
(54-38)+(9-2)= 16+7=23
(54-38)+(9-7)= 16+2= 18
(57- 18)+(6-2)=39+4=43
(57- 18)+(6-4)=39+2=4 1
(57- 19)+(6-2)=38+4=42
(57- 19)+(6-4)=38+2=40
(57-38)+(6-2)= 19+4=23
(57-38)+(6-4)= 19+2=2 1
(57-39)+(6-2)= 18+4=22
(57-39)+(6-4)= 18+2=20
(63- 15)+(9-2)=48+7=55
(63- 15)+(9-7)=48+2=50
(63- 18)+(9-2)=45+7=52
(63- 18)+(9-7)=45+2=47
(63-45)+(9-2)= 18+7=25
(63-45)+(9-7)= 18+2=20
(63-48)+(9-2)= 15+7=22
(63-48)+(9-7)= 15+2= 17
(64-25)+(8- 1)=39+7=46
(64-25)+(8-7)=39+ 1=40
(64-29)+(8- 1)=35+7=42
(64-29)+(8-7)=35+ 1=36
(64-35)+(8- 1)=29+7=36
(64-35)+(8-7)=29+ 1=30
(64-39)+(8- 1)=25+7=32
(64-39)+(8-7)=25+ 1=26
(67- 18)+(5-2)=49+3=52
(67- 18)+(5-3)=49+2=5 1
(67- 19)+(5-2)=48+3=5 1
(67- 19)+(5-3)=48+2=50
(67-28)+(5- 1)=39+4=43
(67-28)+(5-4)=39+ 1=40
(67-29)+(5- 1)=38+4=42
(67-29)+(5-4)=38+ 1=39
(67-38)+(5- 1)=29+4=33
(67-38)+(5-4)=29+ 1=30
(67-39)+(5- 1)=28+4=32
(67-39)+(5-4)=28+ 1=29
(67-48)+(5-2)= 19+3=22
(67-48)+(5-3)= 19+2=2 1
(67-49)+(5-2)= 18+3=2 1
(67-49)+(5-3)= 18+2=20
(72- 14)+(9-3)=58+6=64
(72- 14)+(9-6)=58+3=6 1
(72- 18)+(9-3)=54+6=60
(72- 18)+(9-6)=54+3=57
(72-54)+(9-3)= 18+6=24
(72-54)+(9-6)= 18+3=2 1
(72-58)+(9-3)= 14+6=20
(72-58)+(9-6)= 14+3= 17
(73- 14)+(8-2)=59+6=65
(73- 14)+(8-6)=59+2=6 1
(73- 19)+(8-2)=54+6=60
(73- 19)+(8-6)=54+2=56
(73-54)+(8-2)= 19+6=25
(73-54)+(8-6)= 19+2=2 1
(73-59)+(8-2)= 14+6=20
(73-59)+(8-6)= 14+2= 16
(8 1-24)+(9-3)=57+6=63
(8 1-24)+(9-6)=57+3=60
(8 1-27)+(9-3)=54+6=60
(8 1-27)+(9-6)=54+3=57
(8 1-35)+(9-2)=46+7=53
(8 1-35)+(9-7)=46+2=48
(8 1-36)+(9-2)=45+7=52
(8 1-36)+(9-7)=45+2=47
(8 1-45)+(9-2)=36+7=43
(8 1-45)+(9-7)=36+2=38
(8 1-46)+(9-2)=35+7=42
(8 1-46)+(9-7)=35+2=37
(8 1-54)+(9-3)=27+6=33
(8 1-54)+(9-6)=27+3=30
(8 1-57)+(9-3)=24+6=30
(8 1-57)+(9-6)=24+3=27
(83- 14)+(7-2)=69+5=74
(83- 14)+(7-5)=69+2=7 1
(83- 19)+(7-2)=64+5=69
(83- 19)+(7-5)=64+2=66
(83-24)+(7- 1)=59+6=65
(83-24)+(7-6)=59+ 1=60
(83-29)+(7- 1)=54+6=60
(83-29)+(7-6)=54+ 1=55
(83-54)+(7- 1)=29+6=35
(83-54)+(7-6)=29+ 1=30
(83-59)+(7- 1)=24+6=30
(83-59)+(7-6)=24+ 1=25
(83-64)+(7-2)= 19+5=24
(83-64)+(7-5)= 19+2=2 1
(83-69)+(7-2)= 14+5= 19
(83-69)+(7-5)= 14+2= 16
(86-27)+(4- 1)=59+3=62
(86-27)+(4-3)=59+ 1=60
(86-29)+(4- 1)=57+3=60
(86-29)+(4-3)=57+ 1=58
(86-57)+(4- 1)=29+3=32
(86-57)+(4-3)=29+ 1=30
(86-59)+(4- 1)=27+3=30
(86-59)+(4-3)=27+ 1=28
(9 1-24)+(8-3)=67+5=72
(9 1-24)+(8-5)=67+3=70
(9 1-27)+(8-3)=64+5=69
(9 1-27)+(8-5)=64+3=67
(9 1-34)+(8-2)=57+6=63
(9 1-34)+(8-6)=57+2=59
(9 1-37)+(8-2)=54+6=60
(9 1-37)+(8-6)=54+2=56
(9 1-54)+(8-2)=37+6=43
(9 1-54)+(8-6)=37+2=39
(9 1-57)+(8-2)=34+6=40
(9 1-57)+(8-6)=34+2=36
(9 1-64)+(8-3)=27+5=32
(9 1-64)+(8-5)=27+3=30
(9 1-67)+(8-3)=24+5=29
(9 1-67)+(8-5)=24+3=27
(92-34)+(7- 1)=58+6=64
(92-34)+(7-6)=58+ 1=59
(92-38)+(7- 1)=54+6=60
(92-38)+(7-6)=54+ 1=55
(92-54)+(7- 1)=38+6=44
(92-54)+(7-6)=38+ 1=39
(92-58)+(7- 1)=34+6=40
(92-58)+(7-6)=34+ 1=35
(93- 15)+(6-2)=78+4=82
(93- 15)+(6-4)=78+2=80
(93- 18)+(6-2)=75+4=79
(93- 18)+(6-4)=75+2=77
(93-75)+(6-2)= 18+4=22
(93-75)+(6-4)= 18+2=20
(93-78)+(6-2)= 15+4= 19
(93-78)+(6-4)= 15+2= 17
(94- 16)+(5-2)=78+3=8 1
(94- 16)+(5-3)=78+2=80
(94- 18)+(5-2)=76+3=79
(94- 18)+(5-3)=76+2=78
(94-76)+(5-2)= 18+3=2 1
(94-76)+(5-3)= 18+2=20
(94-78)+(5-2)= 16+3= 19
(94-78)+(5-3)= 16+2= 18
(95-27)+(4- 1)=68+3=7 1
(95-27)+(4-3)=68+ 1=69
(95-28)+(4- 1)=67+3=70
(95-28)+(4-3)=67+ 1=68
(95-67)+(4- 1)=28+3=3 1
(95-67)+(4-3)=28+ 1=29
(95-68)+(4- 1)=27+3=30
(95-68)+(4-3)=27+ 1=28
(45- 17)+(9-3)=28+6=34, (45- 17)+(9-6)=28+3=3 1, (45- 18)+(9-3)=27+6=33
(45- 18)+(9-6)=27+3=30, (45-27)+(9-3)= 18+6=24, (45-27)+(9-6)= 18+3=2 1
(45-28)+(9-3)= 17+6=23, (45-28)+(9-6)= 17+3=20, (46- 17)+(8-3)=29+5=34
(46- 17)+(8-5)=29+3=32, (46- 19)+(8-3)=27+5=32, (46- 19)+(8-5)=27+3=30
(46-27)+(8-3)= 19+5=24, (46-27)+(8-5)= 19+3=22, (46-29)+(8-3)= 17+5=22
(46-29)+(8-5)= 17+3=20, (54- 16)+(9-2)=38+7=45, (54- 16)+(9-7)=38+2=40
(54- 18)+(9-2)=36+7=43, (54- 18)+(9-7)=36+2=38, (54-36)+(9-2)= 18+7=25
(54-36)+(9-7)= 18+2=20, (54-38)+(9-2)= 16+7=23, (54-38)+(9-7)= 16+2= 18
(57- 18)+(6-2)=39+4=43, (57- 18)+(6-4)=39+2=4 1, (57- 19)+(6-2)=38+4=42
(57- 19)+(6-4)=38+2=40, (57-38)+(6-2)= 19+4=23, (57-38)+(6-4)= 19+2=2 1
(57-39)+(6-2)= 18+4=22, (57-39)+(6-4)= 18+2=20, (63- 15)+(9-2)=48+7=55
(63- 15)+(9-7)=48+2=50, (63- 18)+(9-2)=45+7=52, (63- 18)+(9-7)=45+2=47
(63-45)+(9-2)= 18+7=25, (63-45)+(9-7)= 18+2=20, (63-48)+(9-2)= 15+7=22
(63-48)+(9-7)= 15+2= 17, (64-25)+(8- 1)=39+7=46, (64-25)+(8-7)=39+ 1=40
(64-29)+(8- 1)=35+7=42, (64-29)+(8-7)=35+ 1=36, (64-35)+(8- 1)=29+7=36
(64-35)+(8-7)=29+ 1=30, (64-39)+(8- 1)=25+7=32, (64-39)+(8-7)=25+ 1=26
(67- 18)+(5-2)=49+3=52, (67- 18)+(5-3)=49+2=5 1, (67- 19)+(5-2)=48+3=5 1
(67- 19)+(5-3)=48+2=50, (67-28)+(5- 1)=39+4=43, (67-28)+(5-4)=39+ 1=40
(67-29)+(5- 1)=38+4=42, (67-29)+(5-4)=38+ 1=39, (67-38)+(5- 1)=29+4=33
(67-38)+(5-4)=29+ 1=30, (67-39)+(5- 1)=28+4=32, (67-39)+(5-4)=28+ 1=29
(67-48)+(5-2)= 19+3=22, (67-48)+(5-3)= 19+2=2 1, (67-49)+(5-2)= 18+3=2 1
(67-49)+(5-3)= 18+2=20, (72- 14)+(9-3)=58+6=64, (72- 14)+(9-6)=58+3=6 1
(72- 18)+(9-3)=54+6=60, (72- 18)+(9-6)=54+3=57, (72-54)+(9-3)= 18+6=24
(72-54)+(9-6)= 18+3=2 1, (72-58)+(9-3)= 14+6=20, (72-58)+(9-6)= 14+3= 17
(73- 14)+(8-2)=59+6=65, (73- 14)+(8-6)=59+2=6 1, (73- 19)+(8-2)=54+6=60
(73- 19)+(8-6)=54+2=56, (73-54)+(8-2)= 19+6=25, (73-54)+(8-6)= 19+2=2 1
(73-59)+(8-2)= 14+6=20, (73-59)+(8-6)= 14+2= 16, (8 1-24)+(9-3)=57+6=63
(8 1-24)+(9-6)=57+3=60, (8 1-27)+(9-3)=54+6=60, (8 1-27)+(9-6)=54+3=57
(8 1-35)+(9-2)=46+7=53, (8 1-35)+(9-7)=46+2=48, (8 1-36)+(9-2)=45+7=52
(8 1-36)+(9-7)=45+2=47, (8 1-45)+(9-2)=36+7=43, (8 1-45)+(9-7)=36+2=38
(8 1-46)+(9-2)=35+7=42, (8 1-46)+(9-7)=35+2=37, (8 1-54)+(9-3)=27+6=33
(8 1-54)+(9-6)=27+3=30, (8 1-57)+(9-3)=24+6=30, (8 1-57)+(9-6)=24+3=27
(83- 14)+(7-2)=69+5=74, (83- 14)+(7-5)=69+2=7 1, (83- 19)+(7-2)=64+5=69
(83- 19)+(7-5)=64+2=66, (83-24)+(7- 1)=59+6=65, (83-24)+(7-6)=59+ 1=60
(83-29)+(7- 1)=54+6=60, (83-29)+(7-6)=54+ 1=55, (83-54)+(7- 1)=29+6=35
(83-54)+(7-6)=29+ 1=30, (83-59)+(7- 1)=24+6=30, (83-59)+(7-6)=24+ 1=25
(83-64)+(7-2)= 19+5=24, (83-64)+(7-5)= 19+2=2 1, (83-69)+(7-2)= 14+5= 19
(83-69)+(7-5)= 14+2= 16, (86-27)+(4- 1)=59+3=62, (86-27)+(4-3)=59+ 1=60
(86-29)+(4- 1)=57+3=60, (86-29)+(4-3)=57+ 1=58, (86-57)+(4- 1)=29+3=32
(86-57)+(4-3)=29+ 1=30, (86-59)+(4- 1)=27+3=30, (86-59)+(4-3)=27+ 1=28
(9 1-24)+(8-3)=67+5=72, (9 1-24)+(8-5)=67+3=70, (9 1-27)+(8-3)=64+5=69
(9 1-27)+(8-5)=64+3=67, (9 1-34)+(8-2)=57+6=63, (9 1-34)+(8-6)=57+2=59
(9 1-37)+(8-2)=54+6=60, (9 1-37)+(8-6)=54+2=56, (9 1-54)+(8-2)=37+6=43
(9 1-54)+(8-6)=37+2=39, (9 1-57)+(8-2)=34+6=40, (9 1-57)+(8-6)=34+2=36
(9 1-64)+(8-3)=27+5=32, (9 1-64)+(8-5)=27+3=30, (9 1-67)+(8-3)=24+5=29
(9 1-67)+(8-5)=24+3=27, (92-34)+(7- 1)=58+6=64, (92-34)+(7-6)=58+ 1=59
(92-38)+(7- 1)=54+6=60, (92-38)+(7-6)=54+ 1=55, (92-54)+(7- 1)=38+6=44
(92-54)+(7-6)=38+ 1=39, (92-58)+(7- 1)=34+6=40, (92-58)+(7-6)=34+ 1=35
(93- 15)+(6-2)=78+4=82, (93- 15)+(6-4)=78+2=80, (93- 18)+(6-2)=75+4=79
(93- 18)+(6-4)=75+2=77, (93-75)+(6-2)= 18+4=22, (93-75)+(6-4)= 18+2=20
(93-78)+(6-2)= 15+4= 19, (93-78)+(6-4)= 15+2= 17, (94- 16)+(5-2)=78+3=8 1
(94- 16)+(5-3)=78+2=80, (94- 18)+(5-2)=76+3=79, (94- 18)+(5-3)=76+2=78
(94-76)+(5-2)= 18+3=2 1, (94-76)+(5-3)= 18+2=20, (94-78)+(5-2)= 16+3= 19
(94-78)+(5-3)= 16+2= 18, (95-27)+(4- 1)=68+3=7 1, (95-27)+(4-3)=68+ 1=69
(95-28)+(4- 1)=67+3=70, (95-28)+(4-3)=67+ 1=68, (95-67)+(4- 1)=28+3=3 1
(95-67)+(4-3)=28+ 1=29, (95-68)+(4- 1)=27+3=30, (95-68)+(4-3)=27+ 1=28
The calculation process and answer assume that these three numbers are a, b, c b and c, then these five numbers are-13, a, b, c, 23, and the difference between every two numbers is y, then:
4y=23-(- 13)=36
y=9
Then a =- 13+9 =-4, b = 5 and c = 14.
a+b+c= 15
Or use the knowledge of sequence to answer:
This series must be arithmetic progression. Then b=(23- 13)/2=5.
a+c=- 13+23= 10
a+b+c= 15
So the answer is 15.
Calculation process and answer. . . Thank you. Have you ever learned logarithm?
Mathematical calculation process and answer =-(1/8) 2 * 24 * (1)+(2 *1/9)
= 1/4+2/9
= 17/36