Ôn tập chương I

Chia lũy thừa Lũy Thừa Nhân, chia Cộng, trừ

 Bài 1: Thực hiện phép tính:

56 : 54 + 32.2 - 20120
22.3 – 27 : 25 + 50
1100 + 38 : 35 - 23.2
200 : 23 + 311 : 39 – 180
3.52 + 64 : 24 – 81
53.2 – 100 : 4 + 32.5
62 : 9 + 50.2 – 321 : 319
2.33 + 28:7 – 620 : 618
32.5 + 23.10 – 81:3
513 : 510 – 25.22 + 1113
32.4 – 23.3 + 7.5
7.5 + 32.4 – 4.6
20 : 22 + 59 : 58 + 90
100 : 51 + 7.32 – 112
84 : 4 + 39 : 37 + 50
62 – 23.3 + 16.3
59 : 57 + 70 : 14 – 23.51
32.5 – 22.7 + 183
59 : 57 + 12.3 + 70
22.6 – 18 : 32 + 15.21
151 – 291 : 288 + 12.3
238 : 236 + 51.32 - 72
249 – 25.8 + 32.4
791 : 789 + 5.52 – 124

Bài 2: Thực hiện phép tính:

12 – 2.(18 – 3.5)
(11 + 5.9):8 -5
234 – (56 + 24 : 4)
(4.5 + 15):7 + 3
39 – 9.(23 – 5)
37 + 3.(21 : 7 + 2)
(12 + 3.8):4 + 16
62 – 5.(32 - 5)
232 : [315 – (23.10 + 81)]
29 – [16 + 3.(51 – 49)]
125 – 2.[56 – 48 : (15 – 7)]
12 : {390 : [500 – (125 + 35.7)]}
24 : {300 : [250 – (150 + 15.5)]}
25.{32 : [12 – 4 + 4.(16 : 8)]}
2.{198 – [158 – (46 + 4).2]}
25.{32 : [8 + 4.(16 : 23)]}
24 : {300 : [375 – (150 + 5.15)
400 : {5.[325 – (145.2 + 15)]}
100 : {250 : [450 – (500 – 22.25)]}
5.{24 – [3.(5 + 2.5) + 15] : 15}
70 – [60 – (12 – 8)2]
20 – [30 – (5 – 1)2]
14.3 – [27 – (4 – 1)2]
2011 + 5[300 – (17 – 7)2]
695 – [200 + (11 – 1)2]
129 – 5[29 – (6 – 1)2]
64 : [12 – 4 + 2.(11 – 9)2]

Bài 3: Tìm x, biết:
2x = 4
3x = 9
2x = 8
3x = 3
4x = 16
5x = 25
2x = 16
3x = 27
5x = 125
2x = 32
x2 = 9
x2 = 4
x3 = 8
x2 = 16
x4 = 16
x3 = 27
x2 = 25
x3 = 125
x3 = 64
3x = 81
5x = 625
4x = 64
6x = 36
7x = 49
2x+1 = 4
2x-1 = 4
3x-2 = 27
2x+1 = 8
5x-2 = 625
2x .4 = 128
3x 3= 3
41 - 2x = 9
3x – 7 = 2
4x + 8 = 72
3x – 15 = 12
3x-2 . 9 = 81
3x+1 : 9 = 3
5x-1 – 12 = 13
2.x3 = 16
75 : x2 = 3

Bài 4: Tìm x, biết:
10 + 2x = 45 : 42
3x – 9 = 317 : 315
26 – 2x = 221 : 219
9 + 3x = 325 : 322
10 + 2x = 32.2
3x + 20 = 23 .5
(x + 2) – 2 = 5
(x + 3) + 1 = 7
(3x – 4) + 4 = 12
(5x + 4) – 1 = 13
(4x – 8) – 3 = 5
3 + (x – 5) = 7
8 – (2x – 4) = 2
7 + (5x + 2) = 14