Bài 2:Tim x:
a x + 4 + 9000 + 600 =9654
b x +86 = 40000 + 9000 + 100 + 80 + 6
>,<,=
a) 15000 : 3 : 2 .?. 15000
b) 80000 : 4 x 2 .?. 5000
c) 10000 x 6 : 2 .?. 30000
d) 40000 : 5 : 2 .?. 9000
a) 15 000 : 3 : 2 = 5000 : 2 = 2500
Vì 2500 < 15 000 nên 15 000 : 3 : 2 < 15 000.
b) 80000 : 4 x 2 = 20000 x 2 = 40000
Vì 40 000 > 5000 nên 80 000 : 4 x 2 > 5000.
c) 10 000 x 6 : 2 = 60 000 : 2 = 30 000
Vì 30 000 = 30 000 nên 10000 x 6 : 2 = 30000.
d) 40000 : 5 : 2 = 8000 : 2 = 4000
Vì 4000 < 9000 nên 40000 : 5 : 2 < 9000
a) 125 x 6 = ...... × 125
b) 34 × (4 + 5) = 9 × ....
c) 18 x 1000=
d) 9000 : 100=
a) 125 x 6 = ...6... × 125
b) 34 × (4 + 5) = 9 × ..34..
c) 18 x 1000=18000
d) 9000 : 100=90
a) 125 x 6 = ...6.. × 125
b) 34 × (4 + 5) = 9 × ..34..
c) 18 x 1000= 18000
d) 9000 : 100= 90
Viết các tổng thành số có bốn chữ số (theo mẫu):
a) Mẫu: 5000 + 200 + 70 + 8 = 5278
7000 + 600 + 50 + 4 = ................
2000 + 800 + 90 + 6 = ................
8000 + 400 + 20 + 7 = ................
9000 + 900 + 90 + 9 = ................
b) Mẫu: 4000 + 20 + 1 = ................
3000 + 60 + 8 = ................
7000 + 200 + 5 = ................
9000 + 50 + 6 = ................
2000 + 100 + 3 = ................
5000 + 7 = ........................
9000 + 9 = ........................
3000 + 300 + 3 = ................
8000 + 700 + 5 = ................
a) Mẫu: 5000 + 200 + 70 + 8 = 5278
7000 + 600 + 50 + 4 = 7654
2000 + 800 + 90 + 6 = 2896
8000 + 400 + 20 + 7 = 8427
9000 + 900 + 90 + 9 = 9999
b) Mẫu: 4000 + 20 + 1 = 4021
3000 + 60 + 8 = 3068
7000 + 200 + 5 = 7205
9000 + 50 + 6 = 9056
2000 + 100 + 3 = 2103
5000 + 7 = 5007
9000 + 9 = 9009
3000 + 300 + 3 = 3303
8000 + 700 + 5 = 8705
a) Mẫu: 5000 + 200 + 70 + 8 = 5278
7000 + 600 + 50 + 4 = 7654
2000 + 800 + 90 + 6 = 2896
8000 + 400 + 20 + 7 = 8427
9000 + 900 + 90 + 9 = 9999
b) Mẫu: 4000 + 20 + 1 = 4021
3000 + 60 + 8 = 3068
7000 + 200 + 5 = 7205
9000 + 50 + 6 = 9056
2000 + 100 + 3 = 2103
5000 + 7 = 5007
9000 + 9 = 9009
3000 + 300 + 3 = 3303
8000 + 700 + 5 = 8705
1. Tính nhẩm:
a ) 18 x 10 =
18 x 100 =
18 x 1000 =
82 x 100 =
75 x 1000 =
19 x 10 =
256 x 1000 =
302 x 10 =
400 x 100 =
b ) 9000 : 10 =
9000 : 100 =
9000 : 1000 =
6800 : 100 =
420 : 10 =
2000 : 1000 =
20020 : 10 =
200200 : 100 =
2002000 : 1000 =
a ) 18 x 10 = 180
18 x 100 = 1800
18 x 1000 = 18000
82 x 100 = 8200
75 x 1000 = 75000
19 x 10 = 190
256 x 1000 = 256000
302 x 10 = 3020
400 x 100 = 40000
b ) 9000 : 10 = 900
9000 : 100 = 90
9000 : 1000 = 9
6800 : 100 = 68
420 : 10 = 42
2000 : 1000 = 2
20020 : 10 = 2002
200200 : 100 = 2002
2002000 : 1000 = 2002
a)18 x 10 = 180
18 x 100 = 1 800
18 x 1000 = 18 000
82 x 100 = 8 200
75 x 1000 = 75 000
19 x 10 = 190
256 x 1000 = 256 000
302 x 10 = 3 020
400 x 100 = 40 000
b)9000 : 10 = 900
9000 : 100 = 90
9000 : 1000 = 9
6800 : 100 = 68
420 : 10 = 42
2000 : 1000 = 2
20 020 : 10 = 2 002
200 200 : 100 = 2 002
2 002 000 : 1000 = 2 002
a) 18*10=180 b)9000:10=900
18*100=1800 9000:100=90
18*1000=18000 9000:1000=9
82*100=8200 6800:100=68
75*1000=75000 420:10=42
19*10=190 2000:1000=2
256*1000=256000 20020:10=2002
302*10=3020 200200:100=2002
400*100=40000 2002000:1000=2002
x + 100 = 9000 - 8000
x + 100 = 9000- 8000
x + 100=1000
x = 1000 - 100
x = 900
x + 100 = 9000 - 8000
x + 100 = 1000
x = 1000 - 100
x = 900
x + 100 = 9000- 8000
x + 100=1000
x = 1000 - 100
x = 900
x+9000=90x100
tim x
ai k minh minh k lai
0
k cho mk nha
mk k cho bn rồi
x+9000=90x100
=>x+9000=9000
=>x=9000-9000
=>x=0
tính nhanh
100 + 100 - x = 9000
100 + 100 - x = 9000
100 - x = 9000 - 100
100 - x = 8900
x = 100 - 8900
x = -8800
100 + 100 - x = 9000
200 - x = 9000
x = 9000 - 200
x = 8800
y x 4 + y x 6 = 1850
y x 125 - y x 25 = 9000
y x 4 + y x 6 = 1850
y x ( 4 + 6 ) = 1850
y x 10 = 1850
y = 1850 : 10
y = 185
y x 125 - y x 25 = 9000
y x ( 125 - 25 ) = 9000
y x 100 = 9000
y = 9000 : 100
y = 90
* y x 4 + y x 6 = 1850
y x (4 + 6) = 1850
y x 10 = 1850
y = 1850 : 10 = 185
* y x 125 - y x 25 = 9000
y x (125 - 25) = 9000
y x 100 = 9000
y = 9000 : 100 = 90
y x 4 + y x 6 = 1850
y x ( 4 + 6 ) = 1850
y x 10 = 1850
y = 185
y x 125 - y x 25 = 9000
y x ( 125 - 25 ) = 9000
y x 100 = 9000
y = 90
9000 : 2 x 100 + 24 x 97
Ai nhanh và đúng,chính xác thì mk TI CK
9000:2x100+24x97
= 4500 x100+ 2328= 450000+2328=452328
9000 : 2 x 100 + 24 x 97
= 4500 x 100 + 2328
= 450 000 + 2328
=453 328
kick mình nha làm ơn !!