Tìm x biết rằng
----- Nội dung dịch tự động từ ảnh -----
Bài 1: Tìm x:
a)
b)
Bài 2: Tìm x:
165 : x = 3
x-71 = 129
c) 22 + x = 52
a) 71-(33+ x) = 26
b)
(x + 73)-26=76
c)
45-(x +9)=6
d) 89 (73-x) = 20
(x + 7)-25 = 13
e)
f) 198-(x + 4) = 120
g) 2(x-51)=2.2³ + 20
h) 450 (x-19) = 50
i) 4(x-3) = 7² - 1¹⁰
i)
j)
Bài 3: Tìm x:
a)
b)
c)
d)
e)
f)
g)
h)
7x 5 = 16
156-2x = 82
10x + 65 = 125
8x + 2x = 25.2²
15+ 5x = 40
5x + 2x=6²-5⁰
5x + x = 150:2+3
6x + x = 5¹:5⁹ +3¹
5x + 3x = 36: 3³.4 +12
4x + 2x = 68-2¹⁹:216
Bài I: Tính nhanh
a) 58.75 + 58.50 - 58.25
b) 27.39+27.63 -2.27
c) 128.46 +128.32 + 128.22
d) 66.25 +5.66+66.14 +33.66
e) 12.35 +35.182-35.94
f) 35.23 +35.41 +64.65
g) 29.87-29.23 +64.71
Bài 1: Tính tổng:
III. TÌM X
d) 2x = 102
e) x + 19 = 301
f) 93-x=27
j) 140 (x-8)= 7
k) 4(x +41) = 400
a) S₁ = 1+2+3+...+999
b) S₂ = 10 + 12 + 14+...+2010
c) S3 = 21 +23+25+ ... + 1001
d) S₁ = 24+25 +26+ ... + 125 + 126
e) Ss = 1+4+7+...+79
f) S6= 15+17+19+21+ ... + 151+ 153 + 155
g) S₁= 15+ 25 +35+...+115
1) 11(x-9) = 77
m) 5(x-9) = 350
n) 2x 49 5.3²
o) 200 (2x + 6) = 4³
p) 135-5(x + 4) = 35
q) 25+3(x-8) = 106
r) 32(x + 4) - 5² = 5.2²
k) 5x+x=39–3":3
1) 7x-x=521:519 +3.2² -7°
m) 7x-2x = 6¹: 6¹5 + 44:11
n) 0:x=0
0) 3=9
p) 4* = 64
q)
2 = 16
r)
9x1 = 9
s) x¹ = 16
t) 2:25 = 1
IV. TÍNH NHANH
h) 48.19+48.115 + 134.52
i) 27.121-87.27 + 73.34
125.98-125.46-52.25
j)
k) 136.23 136.17-40.36
1) 17.93 +116.83 + 17.23
m) 19.27+ 47.81 + 19.20
n) 87.23+ 13.93 +70.87
V. TÍNH TỔNG
Bài 1: Tìm x:
a)
b)
Bài 2: Tìm x:
165 : x = 3
x-71 = 129
c) 22 + x = 52
a) 71-(33+ x) = 26
b)
(x + 73)-26=76
c)
45-(x +9)=6
d) 89 (73-x) = 20
(x + 7)-25 = 13
e)
f) 198-(x + 4) = 120
g) 2(x-51)=2.2³ + 20
h) 450 (x-19) = 50
i) 4(x-3) = 7² - 1¹⁰
i)
j)
Bài 3: Tìm x:
a)
b)
c)
d)
e)
f)
g)
h)
7x 5 = 16
156-2x = 82
10x + 65 = 125
8x + 2x = 25.2²
15+ 5x = 40
5x + 2x=6²-5⁰
5x + x = 150:2+3
6x + x = 5¹:5⁹ +3¹
5x + 3x = 36: 3³.4 +12
4x + 2x = 68-2¹⁹:216
Bài I: Tính nhanh
a) 58.75 + 58.50 - 58.25
b) 27.39+27.63 -2.27
c) 128.46 +128.32 + 128.22
d) 66.25 +5.66+66.14 +33.66
e) 12.35 +35.182-35.94
f) 35.23 +35.41 +64.65
g) 29.87-29.23 +64.71
Bài 1: Tính tổng:
III. TÌM X
d) 2x = 102
e) x + 19 = 301
f) 93-x=27
j) 140 (x-8)= 7
k) 4(x +41) = 400
a) S₁ = 1+2+3+...+999
b) S₂ = 10 + 12 + 14+...+2010
c) S3 = 21 +23+25+ ... + 1001
d) S₁ = 24+25 +26+ ... + 125 + 126
e) Ss = 1+4+7+...+79
f) S6= 15+17+19+21+ ... + 151+ 153 + 155
g) S₁= 15+ 25 +35+...+115
1) 11(x-9) = 77
m) 5(x-9) = 350
n) 2x 49 5.3²
o) 200 (2x + 6) = 4³
p) 135-5(x + 4) = 35
q) 25+3(x-8) = 106
r) 32(x + 4) - 5² = 5.2²
k) 5x+x=39–3":3
1) 7x-x=521:519 +3.2² -7°
m) 7x-2x = 6¹: 6¹5 + 44:11
n) 0:x=0
0) 3=9
p) 4* = 64
q)
2 = 16
r)
9x1 = 9
s) x¹ = 16
t) 2:25 = 1
IV. TÍNH NHANH
h) 48.19+48.115 + 134.52
i) 27.121-87.27 + 73.34
125.98-125.46-52.25
j)
k) 136.23 136.17-40.36
1) 17.93 +116.83 + 17.23
m) 19.27+ 47.81 + 19.20
n) 87.23+ 13.93 +70.87
V. TÍNH TỔNG