北师大版七年级数学下册整式的加减法计算题精选 432.docx
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北师大版七年级数学下册整式的加减法计算题精选432
(6k2+9k)-(7k2-2k+1)
(2a2-a-8b)-(5a2+a-7b)
7x2-(2x2-8x+5)-(2x+1)
9y2+(7x2+y)+(4x2+8y2)
7
(7x2+5xy+—x)+(7x2-7xy-4x)
8
11
(—xy+2y2-5)-(x2+—xy+2y2+1)
68
62
(xy+—y+—)+(xy-x+2)
73
(6y-x-4z2)+(8y-9x-9z2)
(2k2-8k)-(5k2-5k-1)
(6a2+4a-7b)-(8a2-9a-5b)
8x2-(4x2+8x+1)+(3x-1)
5y2-(2x2+y)-(4x2+6y2)
4
(9x2-5xy-—x)+(5x2+2xy-x)
3
76
(—xy+9y2+1)+(x2-—xy+2y2+6)
67
11
(xy+—y-—)-(xy-x-6)
44
(6y-4x+6z2)-(9y-2x+3z2)
(8k2-7k)-(8k2-5k+3)
(7a2+8a-8b)+(2a2-7a-3b)
7x2+(7x2-3x-7)-(8x+6)
9y2-(8x2+y)+(8x2-8y2)
1
(2x2+8xy-—x)-(5x2-3xy-2x)
7
15
(—xy+2y2-9)-(x2-—xy-9y2+7)
76
11
(xy-—y+—)+(xy+x-9)
46
(y-6x+3z2)-(9y-2x-7z2)
(8k2+5k)-(2k2+7k+2)
(4a2+7a+7b)+(8a2-6a+4b)
9x2+(9x2+6x-5)+(9x+9)
2y2-(x2+y)-(5x2-4y2)
1
(9x2+6xy-—x)+(2x2-3xy-9x)
8
12
(—xy+3y2+1)-(x2-—xy-6y2-8)
53
71
(xy+—y+—)+(xy-x+4)
65
(5y-3x+3z2)-(2y-3x+7z2)
(3k2+5k)-(7k2+8k-1)
(6a2-9a-5b)+(4a2-6a-7b)
3x2-(6x2-6x-2)+(4x+2)
8y2-(x2+y)-(3x2+y2)
2
(8x2-2xy-—x)+(7x2+3xy-9x)
3
94
(—xy-7y2-3)+(x2+—xy-6y2-3)
83
51
(xy+—y-—)+(xy-x-9)
66
(8y-8x+6z2)+(9y-7x+6z2)
(6k2-5k)+(7k2+6k+7)
(9a2+2a+7b)+(5a2+4a-3b)
4x2-(4x2-2x+7)+(4x-8)
6y2-(4x2-y)+(4x2+4y2)
6
(x2+5xy-—x)+(2x2+2xy+x)
7