人教版五年级上册数学解方程专项练习100题与答案
(1)x+5.4=15.8 (2)180+x=278 (3)x-6.3=21.5
(4)15-x=2.7 (5)x-70.5=102.5 (6)x+15=25.5
(7)0.6x=3 (8) 1.5x=9 (9) x÷6=2.4
(10) 2.1÷x=7 (11) x÷2.1=4.5 (12) 6.2÷x=3.1
(13) 5x+28=48 (14) 2.5x-12=30 (15)42-3x=21
(16) 4(0.9-x)=3.2 (17) (1.8-2x)÷4=0.25 (18） (x+2.8)×5=15
（19）6x+10.8=40.8 (20) 2x-0.6=4.4 (21) 34.7-5x=7.7
(22) 1.4(x+2.1)=4.9 (23) (5.3-4.8)x=20 (24) (x-4.5)÷2=2.4
(25) x-4.96=100 (26)x+3.6=4.5 (27)6.35+x=10.87
(28)x-1.8=2.8 (29) x+2.8×3=17.4 (30) x-2×8=60
(31) 1.1x+2.2=7.7 (32) 0.4x-9=9 (33)21-2x=15
(34)8+0.4x=16 (35)7.2x-3.6=36 (36)4x-8=100
(37)6(x-3)=18 (38)2(x-0.4)=3.4 (39) 6(x+4.2)=78
(40) (x+3)÷2=7.5 (41)0.8（x-7.5）=34 (42)3.5(x+7.2)=40×1.4
(43)3x+10x=91 (44)3x-4×0.6x=5.4 (45) 4.8x+0.2x=8.5
(46)9x-2x=161 (47)36x+52x=220 (48)6x+9x-12x=2.46
(49)11x-5×5=96 (50) 8(x+0.8)=7.2 (51) (x-3.6)÷2.5=4
(52) 5(x-3.5)=1.8 (53) 4.8+0.2x=8.5 (54) (3x-3)×7=63
(55)3x+1.2×3=5.1 (56)1.8x-1.8×5=3.6 (57) 4(x+2.5)=20.4
(58) (x-0.6)÷5=0.36 (59) 3.2x+2.2x=10.8 (60)x-0.84x=21.6
(61) x-3.6=4.2 (62) 6.3÷x=0.9 (63) 7x-2x=63
(64)2.5+x=24÷4 (65) 3(x-2)=9.6 (66) 3×0.7+4x=6.5
(67)x+2.5=18.7 (68)1.2x=6.72 (69)2x-4.5=5.7
(70)(x+16)×2.1=42 (71)16×5-5x=26.5 (72)5x+2x=1.47
(73)4x-0.2=9.8 (74)4x+1.5x=4.4 (75)9x÷4=8.19
(76) 0.3(x-1.3)=7.71 (77) 7.6+3x=12.1 (78) 0.4x+3×0.5=7.5
(79) 18+x=32 (80)x-13.4=6.8 (81) x+6.8=13.6
(82)x-9=24 P43 (83)8x=154 (84)x÷3.8=2.5
(85)40-x=31.5 (86)4.8÷x=2.4 (87)3x+10=121
(88)2(x-0.4)=3.4 (89)3x-4×0.6=5.4 (90)（x-4.5）÷2=2.4
(91)4x+1.2×5=24.4 (92)8x-5x=27 (93)15.3-3x=2.64
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