9000+1000-x=3900
X + 1000 = 9000 - 1000
x + 1000 = 9000 - 1000
x + 1000 = 8000
x = 8000 - 1000
x = 7000
Vậy x = 7000
X + 1000 = 9000 - 1000
X + 1000 = 8000
X = 8000 - 1000
X = 7000
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 + 1000 = 9000
tìm x
x + 1000 = 9000
x = 9000- 1000
x = 8000
x + 1000 = 9000
x = 9000 - 1000
x = 8000
ai k mình thì mình k lại cho
x + 500 + 200 = 9000 - 1000
x+500+200=9000-1000
x+(500+200)=8000
x+700=8000
x=8000-700
x=7300
x+500+200=9000-1000
x+700 =8000
x =8000-700
x=7300
k mình nha
x + 500 +200 = 9000 -1000
x + 700 = 8000
x = 8000 - 700
x = 7300
1000 x 9000
1000 x 9000 = 9000000
Tính nhẩm:
7000 + 200 = ................
60 000 + 30 000 = ................
8000 - 3000 = ................
90 000 + 5000 = ................
4000 x 2 = ................
1000 + 3000 x 2 = ................
(1000 + 3000) x 2 = ................
9000 : 3 + 200 = ................
7000 + 200 = 7200
60 000 + 30 000 = 90 000
8000 - 3000 = 5000
90 000 + 5000 = 95 000
4000 x 2 = 8000
1000 + 3000 x 2 =7000
(1000 + 3000) x 2 = 8000
9000 : 3 + 200 = 3200
7000 + 200 = 7200
60 000 + 30 000 = 90 000
8000 - 3000 = 5000
4000 x 2 = 8000
1000 + 3000 x 2 = 7000
(1000 + 3000 ) x 2 = 8000
9000 : 3 + 200 = 3200
7000 + 200 = 7200
60 000 + 30 000 = 90 000
8000 - 3000 = 5000
90 000 + 5000 = 95 000
4000 x 2 = 8000
1000 + 3000 x 2 =7000
(1000 + 3000) x 2 = 8000
9000 : 3 + 200 = 3200
Tính:
6000 + 3000 + 1000 = …………
56 000 : 7 = …………
5000 x 3 = …………
9000 – 7000 – 2000 = …………
Hướng dẫn giải:
6000 + 3000 + 1000 = 10 000
56 000 : 7 = 8000
5000 x 3 = 15 000
9000 – 7000 – 2000 = 0
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
1000+9000