六年级四则运算题300道

1、六年级四则混合运算题3 - 18()=()=7 5 (-)(24-)()() -=6-=8x-3=(x-6)=25x:=(32 17)(25)()(21 21) (99 )9 ()()30 3 =-=12 10%=110 - 4 - 58 41- (-) 5x-3=x=235-13518 1530.653()10 - - 60%=28 1.6=0.1250.5 2513.09-8.12-4.88 12103-450075()()151137.5 19。52 .54 1.75 x-0.5 x=6.25 x-=30% 6: x=:0.8331.25 10 9.56 4.875- 1.44 6-4.

2、61 8.4-15 99.9999 99.9 41 6 18 2-2801.25 251.2548 0.7 3.9 4.3 6.1 7.3599 7.3547-817- 46101 15.6-2-4 142 1433 - -4-3 1-2 75-(-)240 .42 .5 0.0750()4-1-1.75 0.4 496 2501610.2-(1.25 2.5)1.5-(45)2-(-)0.31(3.3-2.95)49498549-85 (-)() (-) (-)3524(-3)。744 .8 6 .23 .74-3.74-(-)8。64 .3(-0.25)3.6-(4.7 2.3)1.2 1

3、7.1-8.8-1.2 3.625() 60(-)1750 4501832 0.81(3.2-2.95)(2 . 53 . 70 . 412(-)(9-10)101.1-25.93 5。10 .85(-)(1)2.6 2 3-1-1.9 19.9 199.9 1999.9 0.4()(-) 11.25 12.2-1 81.254-4-()4.8 1。23 .51 .4 1 .80 .25 8.24(10-) 168.1(4.32-0.4) -(-)25.12517.4 0.387-4 7.83-(1.26 2.17)-0.24 17-12() (-) (20.1-21)5.1 0.2 (0.1

4、5)24(5)40-35.75-4.25 164-0.7539-0.7515 16 3.641(-2.09)-45(-5)222037-23 6.24.5 3.8 (-) 10-107-(0.35 2) (-) 4-14-3-(-)8.5 0.755 6.51 1 0.540.9-0.75 9 924(-)3 () (-) ()(-) (1-) (5-)(1-) (3 2 1-1) 41-()7 3.25 2 5.48 64 34(-4)(160)15-(2 5) 6.4 1.253 0.254-()()()15.632(1)-3.6(-)12.5；(1)-0()3.681(22.09)2-(

5、11.9-8.4)1.3 20。0183 1 .7200 .1(0。40 .8(2)。512 .5)1x x=2.1x 7.9x=0.29127=x0.33.2(1-) 32 1 2 4 3 993.754 1.63 12.5 2。50 .4 3-1-13.92-(1.19 9.92)-2.815566(1111)40.2-4802.4()()(4-)=:30% x -=1=63-1.8x=7.280799 807 25 0.6 3.1 5.4 6.9 1-(-)(-) 0.52.512.564 2x-=0.5 x x=2:(1-x)=0.36: x=:-80.5=16 7560% 24 0.

6、6(-2)2 (3-112.5% 1)13 70.24-20.875:=:x x -x=9.45 3.75-2x=1 3x 4=4.715.8-14.2-21.6-0.840.84 33.7 3.6 5.33(1.5 2)3.75-=30 1 30%=52-37.5%=0.12512=x1=5 x 3.254=17 1 (1- ) (37.5%)484.67-(2.980.67)46 20(-13)30() 1.250.25=x 1.6=30%x x=42(375 4501825 1-(-)1 (3) () 93.6(1.20.6)5(-)2.3755.625()x4=4x-2.54=1.5- 9 56 (2296 734436)2.4()49 3.8 - 3.8450.81.25 () 【()】x=18 x=4 4x3 9=29 x=41258(24)-(3)37 8.9 2 6.1 0.36101 1723-237