1、六年级上册数学计算题专项练习1、直接写出复数。(20分)= 1= 8= 7 12= = 14=12= 11%= 9.5+0.5= += 02=1= = = = 9=4.9:6.319= = = = = = = = = 2.50.4 = 1.50.05 4591 33 254 1= 1= 60%= 15= 6.810%= 4.5= =301-199= 0.24300= = 2.5+0.25= 9.5-9.50=- = 0.36= 2.4= 4.2 = 1.250.78=30 1.43.5 1.33.7 ()122、怎样简便就怎样算。(40分)(1)3 (2)+(3)+ (4)18(+)(1)7+
2、5 (2)()24)(3)(+) (4)(+)(3217)(25)() (2121) (99)9 () ()30 3 4 5841 ()235 - 13518 153 0.653() 10 - - + 25 13.098.124.88 12103450075() ()1511 37.519.52.54(- )60 36 0.65101+ 27.53.7-7.53.7 +101- 99 + -1(+) 3(1) 7(+) 25() + (1)4 +(+) 12(1) (1) (1)48 () (+)(1)3+ +72(+) 2+ +7 4(9+) + + 230(+) +6 +5 ()48 3-
3、 +0.6 + 101- 28(+-) 51 90 101- 99 + -2.5321.25 9.63.23 15.20.2542821.62.816 5.61.70.5683933-15.7-4.3 41.0619.7220.28700145 18.62.50.45.3+2.725% 0.6710.16.7 3、解方程。(20分)(1)= (2)(+)=(1)()8x3(x6)25 12 10%1105X3= X=60%28 1.75x0.5x6.25 x30 XX= X + X = 4 X+X=20 6X5 =13.4 4 X638 X+=4 X3 9 = 29 5X3 4X6=20.365- X = X - 0.8 X = 16+6 ( X - 4.5) = 7 x-x=14 +x= 7-=2x X+5=X X += 5 x -x=45 X=20 50% X + X = 3.6 25% X + 15%X = 0.365- X = X - 0.8 X = 16+6 ( X - 4.5) = 7 X( + )= X0.375 X = 20 X 8.5= 1.5 X - X -4= 21 4+0.7X=102 X - 25% X = 106