a*2+a*3=2000-1000
a*(2+3)=1000
a*5=1000
a=1000/5
a=200
a*(2+3)+1000=2000
a*5=2000-1000
a*5=1000
a=1000/5
a=200
ax2+ax3=2000-1000
ax2+ax3=1000
ax(2+3)=1000
ax5=1000
a=1000:5
a=200
a*2+a*3=2000-1000
a*(2+3)=1000
a*5=1000
a=1000/5
a=200
a*(2+3)+1000=2000
a*5=2000-1000
a*5=1000
a=1000/5
a=200
ax2+ax3=2000-1000
ax2+ax3=1000
ax(2+3)=1000
ax5=1000
a=1000:5
a=200
Tính nhẩm:
5000 + 100 = ..................
7400 - 400 = ..................
2000 3 + 600 = ..................
8000 : 2 + 2000 = ..................
6000 - (5000 - 1000) = ..................
6000 - 5000 + 1000 = ..................
7000 - 3000 x 2 = ..................
(7000 - 3000) x 2 = ..................
Tính nhẩm
4000 – (2000 – 1000) =
4000 – 2000 + 1000 =
8000 – 4000 x 2 =
(8000 – 4000) x 2 =
1000 + 2000 x 50 / 2 =
900 + 120 - 56 x 3 =
tim x:
x+1000-200=2000
70-5.(x-3)=45
1000 + 1000 + 2000 + X = 6000
tìm X
1000 + 1000 + 2000 + X = 12000
tim x
1000 + 1000 + 1000 + 2000 + X =10 000
tim X
tk nhe
x - 1000 = 2000 : 1000
1000 + 1000 + 2000 + X = 8000
tìm X
tk nhé