小学数学解方程100道练习题
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(1) 4x-20=4 (2) 3.2x-42=26.8 (3)5x+6=18 (4) 40x+5x=124 (5) 5(2.2+x)=10.8 (6) 2(x+1.8)=3.6 (7) (x-8):2=8.8 (8) 7(x-5)=49.7 (9) 13.8x+11.2x=50.5 (10) 6x+29=137 (11) 4x=x+99 (12) 9x+10=91 (13) x+7.1=7.2 (14) 4x-x=89.8 (15) 99-10x=70 (16) 9.5x-5x=28 (17) 11.8+2x=65 (18) X-7.7=9.15
(19) 9.9x-99=9.9 (20) 58X-55X=81 (21) 49+4x=53 (22) 5X+2.9=9.3 (23) 5x+15=39.6 (24) 7.5=6.9+x (25) 59x-39x=240 (26) 4X+3.5=2x+99 (27) 1.2x-5=37 (28) 2x-55=89 (29) 3x-100=35 (30) 7x+14=49 (31) 6x+36=54 (32) 36x-72=0 (33) 55x-55=55 (34) 5x+76=19
(35) 45x-35x=100 (36) 3x-89=100 (37) 5x+39=109 (38) 5x-49=7.3 (39)8+2x=98 (40) 6x-3X-21=21 (41) 56-5-x=8 (42) 6x-5=41 (43) 5x+79=17.5 (44) 9x=98-8 (45) 81+3x=99 (46) 5x-55=17 (47) 5x+9x=28 (48) 5x+88=98 (49) 2x+54=93 (50) 75-2x=53
(51) 56-5x=99 (52) x+16+8=48 (53) 3X-5.9=15.1 (54) 92-59-4x=20 (55) 7.5X+15=8x (56) 8x:3=1.4 (57) 26X+1.5=2x (58) 16x+5x=210 (59) 0.5X+54=4x (60) 56x-51x=85 (61) 9.2-X=0.4 (62) 3x+42:14=15 (63) 12.6:X=0.3 (64) 24+4x=56 (65) X-0.8=15.7 (66) 101-5x=80
(67) 120-5x=58 (68) 5x+5=30 (69) 7(x-6)=49 (70) x-42.9=45.4 (71) 48+2x=76 (72) x:1.8=90 (73) (x-6)-56=19 (74) 3x-56=1 (75) x:10+9=21 (76) 3x+81=36 (77) (300-x):10=30 (78) 5.3+7x=7.4 (79) 81.3-x=2.6 (80) 3x:5=4.5 (81) 68-3x=2 (82) 5X-0.8X=42
(83)5.6x=33.6 (84)0.1(x+6)=3.3X0.4
(85)17.8-x=9.8 (86) (25.5-5.5):x=2
(86)75.6:x=12.6 (88) 9x-49=59
(89) 5x+12.5=32.3 (90) 2(x+9)=132
(90) 98-89+5x=51 (92) x+9x+20=90 (93) 9.5+x+5.9=64 (94) 6(x+45)=50 (95) 5x+5.6=1.5 (96) 10x=88-21 (97) 85+3x=91 (98) 2x-86=36
(99) 2x+10x=48 (100) 2x+16=38