tinh nhanh
136x68+16x272
tinh nhanh:
19x64+76x34
136x68+16x272
19x64+76x34
=19x4x16+76x34
=76x16+76x34
=76x(16+34)=76x50=3800
tinh nhanh
19x64+76x34=
136x68+16x272=
*19x64+76x34=
19x64x19x4x34
19x64x19x136
19x(64+136)
19x200
3800
* 136x68+16x272=
136x68+16x2x136
136x68+32x136
136x(68+136)
136x200
27200
Giải
19 x 64 + 76 x 34 = 19 x 64
= 1216
= 1216 + ( 76 x 34 )
= 1216 + 2584
= 3800.
Câu 2 : Giải
136 x 68 + 16 x 272 = 136 x 68
= 9248
= 9248 + ( 16 x 272 )
= 9248 + 4352
= 13600.
Tinh nhanh
136x68+16x272=?
35x12+65x13=?
136×68+16×272= 136×68+16×2×136
= 136×68+32×136
=136×(68+32)
=136×100=13600
35×12+65×13 = 35×12+65×(12+1)
= 35×12+65×12+65
=12×(35+65)+65
=12×100+65
=1200+65=1265
1.Tinh nhanh
a)136x68+16x272
b)(2+4+6+...+100)x(36x333-108x111)
c019991999x1998-19981998x199
Tính nhanh:
a) 19x64-76x34
b)136x68+16x272
19x64-76x34=-1368
136x68+16x272=13600
ung ho nha
Tính nhanh
a 16x64+76x34
b 35x12+65x13
c 136x68+16x272
d 2018x2018x2019-2019x2019x2018
Tính nhanh
35x12+65x13
b) 136x68+16x272
d) (2+4+6+...+100)x(36x333-108x11)
Viết cách giải ra nhé
a) = 35 x 12 + 65 x 12 + 65 = (35 + 65) x 12+ 65 = 100 x 12 + 65 = 1200 + 65 = 1265
b) tuong tu a
b) (2 + 4 + 6 + ...+ 100) x ( 36 x 3 x 111 - 36 x 3 x 111) = (2 + 4 + 6 + ...+ 100) x 0 = 0
a, 136x68+16x272
b, 37-11x3x[24-23]+22x10
a, 136x68 + 16x2x136 = 136x68+ 32x136 = 136x(68+32) = 136x100 = 13600
b,37 - 11x3x(24-23)+22x10 = 37 - 33x1 +220 = 224
Tích đúng cho mk nhá ^^
tính nhanh:
a) 2+4+6+8+...........+100
b) 173 x454+206-453x138-110
c) (2+4+6+..........+100)x(36x333-108x111)
d) 136x68+16x272
e) 19991999x1998-19981998x1999