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1、解方程練習(xí)題
7+5x=19 4x+120=176 58+x=90 x+150=290
79.4+4x=95.5 2x+55=129 7 x=63 x 9=4.5
2、
4.4x=44 x 4.5=90 x 5=100 6.2x=124
8x-6=19 4x-3.3=8.9 2x-25.8=95.4 6x-54.4=100
8x-77=275 5x-76=144 3x 7=9 4x4.4=10
x78=10.5 x2.5=100 x3=33.3 x2.2=8
9-3x=4.5 73.2-8x=52.5 87-2x=22
3、 66-3x=32.4
77-2x=21.9 99-3x=61.9 3.3x=0.3 8.8x=4.4
9x=0.03 7x=0.001 56(10-x)=58 39(x-5)=3
3(x-4)=46 (8+x) 5=15 (x+5) 3=16 15(x+0.5)=1.5
12x+8x=40 1.2x-0.8x=40 12x+x=16.9 x+ 0.5x=6
4、
x-0.2x=32 1.3x+x=26 3X+5X=48 14X-8X=12
65+2X=44 20X-50=50 28+6X=88 32-22X=10
24-3X=3 10X 0.5=60 99X=100-X 4X+3=18
4X-6=12 56-2X=20 4y+2=6 5x+32=76
3x+6=18 16+8x=40 2x-8=8 4
5、x-39=29
8x-3x=105 x - 65=42 8x+5=7 2x+3=10 、
X-0.8X=6 12x+8x=4.8 7(x-2)=49 48+2x=36
(x-2)3=7 x5+9=21 (200-x)5=30 48-5x=31
3x-8=16 3x+9=27 5.3+7x=7.4 3x5=4.8
53 - 2x=8 40 - 8x=5 2x5=215 4x+25=100
1.7x+0.11
6、=3 0.13x=169 4.8-3x=3.9 3.81x=19
計(jì)算題
30.8[14-(9.85+1.07)] [60-(9.5+28.9)]0.18 2.8810.43-0.243.5
20[(2.44-1.8)0.4+0.15] 28-(3.4+1.252.4) 2.557.1+2.457.1
7779+11113 0.8〔15.5-(3.21+5.79)〕 (31.8+3.24)5
31.54(6+3) 0.64257
7、.8+2.2 22.5+2.52
194-64.81.80.9 36.724.259.9 5180-7056
242.4-2.50.8 (4121+2389)7 67115-974
46912+1492 405(3213-3189) 3.416(0.01635)
0.8[(10-6.76)1.2] 19.46.12.3 5.670.2-0.62
18.10.92+3
8、.93 0.0430.24+0.875 0.40.70.25
0.75102 100-56.23 0.78+5.436+1 4.070.86+9.12.5
5.41.8+2401.5 900072(1.250.78) 61-(1.25+2.50.7)
[(10-0.8)+9.85]-20.125 3.14x14 + 3.14x2 200.966.284
1231.68+5268.32-2569 123+456-52x8
9、 789+456-78
276+228+354+212 (375+1034)+(966+125) (2130+783+270)+1017
99+999+9999+99999 7755-(2187+755) 3065-738-262 -1250
1253225 (13125)(38) (12+24+80)50 2532125
32(25+125) 178101-178 8436+6484 7599+275
83102-832
10、 12318-1233+85123 50(344)3 25(24+16)
17899+178 7942+79+7957 7300254 8100475
158+262+138 375+219+381+225 5001-247-1021-232
(181+2564)+2719 378+44+114+242+222 276+228+353+219
(375+1034)+(966+125) 7755-(2187+755) 3065-738-
11、1065
2357-183-317-357 2365-1086-214 7942+79+7957
7300254 8100475 2356-(1356-721) 1235-(1780-1665)
31870+13310 4(2565+2525) 2.73 + 0.89 + 1.27
4.37 + 0.28 + 1.63 + 5.72 10 - 0.432 - 2.568 9.3 - 5.26 - 2.74
13.4-(3.4+5.2) 14.9-(5.2+4.9)
12、 18.32 - 5.47 - 4.32
17.29 - 5.28 - 6.29 25 6.8 0.04 0.25 32 0.125
6.4 1.25 12.5 3.28 5.7 + 6.72 5.7 2.1 99 + 2.1
1.7 9.9 + 0.17 23 0.1 + 2.3 9.9 0.18 +4.26 -0.18 +4.26
0.58 1.3 0.58 1.3 7.3 4 + 2.7 0.25 3.75 0.5 - 2.75
13、 2
5.26 0.125 + 2.74 8 9.5 (1.9 8) 12.8 (0.4 1.6)
930 0.6 5 63.4 2.5 0.4 (7.7 + 1.54) 0.7 6.9+4.8+3.1
(11.7 + 9.9) 0.9 15.89+(6.75-5.89) 7.85+2.34-0.85+4.66
35.6-1.8-15.6-7.2 13.75-(3.75+6.48) 47.8-7.45+2.55
66.86-8.66-1.34
14、 0.2516.24 0. 2532 0.125 2 .5 (4 +0.4)
(1.25-0.125)8 56.59.9+56.5 3.834.56+3.835.44
5.411-5.4 7.0910.8-0.87.09 3.654.7-36.50.37
13.70.25-3.74 10.716.1-1.110.7 +10.7 5 3.9(1.35)
63.42.50.4 (7.7+1.4)0.7 30.8[14-(9.85+
15、1.07)]
[60-(9.5+28.9)]0.18 2.8810.43-0.243.5 20[(2.44-1.8)0.4+0.15]
28-(3.4+1.252.4) 2.557.1+2.457.1 0.8〔15.5-(3.21+5.79)〕
(31.8+3.24)5 31.54(6+3) 0.64257.8+2.2
22.5+2.52 194-64.81.80.9 36.724.259.9
5180-7056 242.4-2.50.8 67115-974
46912+1492 405(3213-3189) 3.416(0.01635)
0.8[(10-6.76)1.2] 19.46.12.3 5.670.2-0.62
18.10.92+3.93 0.40.70.25 0.75102 100-56.23