1、七年级数学上册计算天天练1.计算(1)4+4-5(2)(5-2)(-9)65365(3)71+(-3)3(4)-(6-5-7)81224(5)(-96)4(-6)(6)(-2)16(2)33832.去括号,并合并同类项(1)2 a2-1(3ab+ a2)9ab6(2)1(x2-y)+1(x- y2)+1(x2- y2)3261.计算(1)5+5-3(2)(6-1)(-8)56365(3)74+(-5)3(4)-(5-4-5)81224(5)(-36)3(-4)(6)(-2)16(1)34942.去括号,并合并同类项(1)2 a2-1(4ab+ a2)9ab7(2)1(x2-y)+1(x- y2
2、)+1(x2- y2)8771.计算(1)3+2-4(2)(6-1)(-9)66356(3)93+(-1)3(4)-(5-5-5)81244(5)(-96)3(-6)(6)(-1)15(1)341032.去括号,并合并同类项(1)5 a2-1(2ab+ a2)8ab7(2)1(x2-y)+1(x- y2)+1(x2- y2)6741.计算(1)2+1-1(2)(5-1)(-9)66267(3)75+(-5)3(4)-(7-4-8)81244(5)(-48)3(-6)(6)(-1)16(2)33942.去括号,并合并同类项(1)5 a2-1(2ab+ a2)8ab9(2)1(x2-y)+1(x-
3、 y2)+1(x2- y2)5291.计算(1)7+4-3(2)(6-1)(-10)65247(3)63+(-2)3(4)-(5-5-5)81223(5)(-24)2(-6)(6)(-2)16(2)341042.去括号,并合并同类项(1)8 a2-1(4ab+ a2)7ab3(2)1(x2-y)+1(x- y2)+1(x2- y2)7831.计算(1)9+4-2(2)(6-3)(-10)55447(3)101+(-3)3(4)-(7-4-6)81224(5)(-96)3(-4)(6)(-2)15(2)34832.去括号,并合并同类项(1)7 a2-1(2ab+ a2)8ab9(2)1(x2-y)+1(x- y2)+1(x2- y2)3281.计算(1)6+4-3(2)(5-2)(-8)65365(3)62+(-1)3(4)-(5-5-5)101222(5)(-60)4(-4)(6)(-1)15(2)3383