a) 6 x 7 + 8 = 42 + 8
= 50
b) 6 x 4 x 2 = 24 x 2
= 48
c) 6 x 5 x 3 = 30 x 3
= 90
d) 6 x 8 – 18 = 48 – 18
= 30
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Các câu hỏi tương tự
a .(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)b.(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112)c. (2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)d.(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)e(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + ........ + 10)f.58 – 58 x (6 + 54 – 60)g.32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32h.(1 + 2 + 3 + 4 + .... + 9) x (21 x 5 – 21 – 4 x21)i.(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ........+ 17 + 19)k.(2 + 4 + 6 + 8 + ... + 20) x (56 x 3 – 72 : 9 x 21)
Đọc tiếp
a .(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)
b.(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112)
c. (2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)
d.(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)
e(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + ........ + 10)
f.58 – 58 x (6 + 54 – 60)
g.32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32
h.(1 + 2 + 3 + 4 + .... + 9) x (21 x 5 – 21 – 4 x21)
i.(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ........+ 17 + 19)
k.(2 + 4 + 6 + 8 + ... + 20) x (56 x 3 – 72 : 9 x 21)
Tínha) 6 x 4 + 30 .............. ..............b) 6 x 8 – 18 .............. ..............c) 6 x 7 + 22 .............. ..............d) 6 x 10 – 25 .............. ..............
Đọc tiếp
Tính
a) 6 x 4 + 30 = ..............
= ..............
b) 6 x 8 – 18 = ..............
= ..............
c) 6 x 7 + 22 = ..............
= ..............
d) 6 x 10 – 25 = ..............
= ..............
Cách làm nào đúng, cách làm nào sai
a) 24 : 6 :2 = 4 : 2 = 2
b) 24 : 6: 2 = 24 : 3 = 8
c) 18 : 3 x 2 = 18 : 6 = 3
d) 18 : 3 x 2 = 6 x 2 = 12
Tính nhanh: (18 - 9 x 2 ) x ( 2 + 4 + 6 + 8 + 10)(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112 )(2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + …….. + 10)58 – 58 x (6 + 54 – 60)32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32(1 + 2 + 3 + 4 + …. + 9) x (21 x 5 – 21 – 4 x21)(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ……..+ 17 + 19)(2 + 4 + 6 + 8 + … + 20) x (56 x 3 – 72 : 9 x 21)Phiền nêu cách làm luôn n...
Đọc tiếp
Tính nhanh:
(18 - 9 x 2 ) x ( 2 + 4 + 6 + 8 + 10)
(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)
(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112 )
(2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)
(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)
(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + …….. + 10)
58 – 58 x (6 + 54 – 60)
32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32
(1 + 2 + 3 + 4 + …. + 9) x (21 x 5 – 21 – 4 x21)
(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ……..+ 17 + 19)
(2 + 4 + 6 + 8 + … + 20) x (56 x 3 – 72 : 9 x 21)
Phiền nêu cách làm luôn nhé, xin cảm ơn
Tính nhẩma) 6 x 2 ..... 6 x 3 ..... 6 x 8 ..... 6 x 1 ..... 6 x 4 ..... 6 x 5 ..... 6 x 9 ..... 1 x 6 ..... 6 x 6 ..... 6 x 7 ..... 6 x 10 ..... 0 x 6 .....b) 6 x 5 ..... 6 x 4 ..... 3 x 6 ..... 2 x 6 ..... 5 x 6 ..... 4 x 6 ..... 6 x 3 ..... 6 x 2 .....
Đọc tiếp
Tính nhẩm
a) 6 x 2 = ..... 6 x 3 = ..... 6 x 8 = ..... 6 x 1 = .....
6 x 4 = ..... 6 x 5 = ..... 6 x 9 = ..... 1 x 6 = .....
6 x 6 = ..... 6 x 7 = ..... 6 x 10 = ..... 0 x 6 = .....
b) 6 x 5 = ..... 6 x 4 = ..... 3 x 6 = ..... 2 x 6 = .....
5 x 6 = ..... 4 x 6 = ..... 6 x 3 = ..... 6 x 2 = .....
x = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 .
x = 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 .
x = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 .
(2 điểm) Tính
a) 5 x 7 + 14
b) 48 : 6 + 13
c) 6 x 8 – 26
d) 24 - 4 x 5
Tính
8 x 1 = ..... 8 x 2 = ..... 8 x 3 = ..... 8 x 4 = .....
1 x 8 = ..... 2 x 8 = ..... 3 x 8 = ..... 4 x 8 = .....
8 x 5 = ..... 8 x 6 = ..... 8 x 7 = ..... 8 x 8 = .....
5 x 8 = ..... 6 x 8 = ..... 7 x 8 = ..... 8 x 9 = .....
Tính:a) 7 x 6 + 18 ............ ............b) 7 x 3 + 29 ............ ............c) 7 x 10 + 40 ............ ............d) 7 x 8 + 38 ............ ............
Đọc tiếp
Tính:
a) 7 x 6 + 18 = ............
= ............
b) 7 x 3 + 29 = ............
= ............
c) 7 x 10 + 40 = ............
= ............
d) 7 x 8 + 38 = ............
= ............