\(x+100-\left(4+4+4+...+4\right)=250\)
\(x+100-45\times4=250\)
\(x+100-180=250\)
\(x+100=430\)
\(x=330\)
\(x+100-\left(4+4+4+...+4\right)=250\)
\(x+100-45\times4=250\)
\(x+100-180=250\)
\(x+100=430\)
\(x=330\)
Tìm X:
x+100-4+4+4+...+4+4=320
có 24 số 4
Tìm x,biết
(x+1)+(x+2)+(x+3)+(x-4)=100-2
tìm x biết
x+ 100 = 25 x 4 + 16
Tìm x:
100:x=4
.....................
.....................
100×4+250
Tìm x:
a) 1996 + x = 2002
b) x x 3 = 9861
c) x : 4 = 250
tính : 250 +25 x 4 = ?
Tính nhẩm:
a) 2 x 2 = ...... 3 x 3 = ......
2 x 4 = ...... 3 x 5 = ......
2 x 6 = ...... 3 x 7 = ......
2 x 8 = ...... 3 x 9 = ......
4 x 4 = ...... 5 x 5 = ......
4 x 2 = ...... 5 x 7 = ......
4 x 6 = ...... 5 x 9 = ......
4 x 8 = ...... 5 x 3 = ......
b) 200 x 4 = ...... 300 x 2 = ......
200 x 2 = ...... 300 x 3 = ......
400 x 2 = ...... 500 x 1 = ......
100 x 4 = ...... 100 x 3 = ......
Tìm x biết:
a, ( x – 266) : 5 = 7
b, (x - 129) × 4 = 36
c, 786 – x = 5 × 4 : 2
d, x + 24 : 4 × 3 = 285
756 = 700 + 50 + ….. = 7 x 100 +……. x 10 + 6 b) 862 = …….. x 100 + …….. x 10 + 2 4 x 2 + 4 x 5 + 4 =…………………….. a x 7 + a x 2 + a =……………………. c) abc = ….. … x 100 +……… x 10 + …….