x=600+400+20-20
x=1000
k mik nha
x + 20 = 600 + 400 + 20
x + 20 = 1000 + 20
x + 20 = 1020
x = 1020 - 20
x = 1000
x + 20 = 600 + 400 + 20
x + 20 = 1020
x = 1020 - 20
x = 1000
X + 20 = 600 + 400 + 20
= X + 20 = 1200
X = 1200 - 20
X = 1180
Dễ mà bé!
x=600+400+20-20
x=1000
k mik nha
x + 20 = 600 + 400 + 20
x + 20 = 1000 + 20
x + 20 = 1020
x = 1020 - 20
x = 1000
x + 20 = 600 + 400 + 20
x + 20 = 1020
x = 1020 - 20
x = 1000
X + 20 = 600 + 400 + 20
= X + 20 = 1200
X = 1200 - 20
X = 1180
Dễ mà bé!
Viết (theo mẫu):
a) 7618 = 7000 + 600 + 10 + 8
9274 = ...................................
4404 = ...................................
1942 = ...................................
5076 = ...................................
2005 = ...................................
b) 5000 + 700 + 20 + 4 = .................
6000 + 800 + 90 + 5 = .................
5000 + 500 + 50 + 5 = .................
2000 + 400 = .................
2000 + 20 = .................
2000 + 7 = .................
x + 20 = 300 + 600
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 = ................
20 x X : 50 : 40 + 350 = 400
x + 600 = 600 + 400
x + 600 = 600 + 400
x + 600 = 600 + 400
x + 600 = 600 + 400
x+200=600+400:2+5
x-200=600