`@` `\text {Ans}`

`\downarrow`

`A)`

`37 \times 46+37 \times 51+111`

`= 37 \times (46+51)+111`

`= 37 \times 97+111`

`= 3589 +111`

`= 3700`

`B)`

`35 \times 215-35 \times 210-175`

`= 35 \times (215-210)-175`

`= 35 \times 5-175`

`= 175-175=0`

`E)`

`76 \times 102-76 \times 2`

`= 76 \times (102-2)`

`= 76 \times 100`

`= 7600`

`C)`

`85 \times 94+85 \times 2 +170 \times 2`

`= 85 \times (94+2) + 170 \times 2`

`= 85 \times 96+170 \times 2`

`= 8160+340`

`= 8500`

`48 \times 56+28 \times 104`

`= 48 \times 28 \times 2+28 \times 104`

`= 28 \times (48 \times 2+104)`

`= 28 \times (96+104)`

`= 28 \times 200`

`= 5600`

`G)`

`206 \times 12-206-206`

`= 206 \times (12-1-1)`

`= 206 \times 10`

`= 2060`

a) 37 x 46 + 37 x 51 + 111

= 37 x ( 46 + 51 ) + 111

= 37 x 97 + 111

= 3589 + 111

= 3700

b) 35 x 215 - 35 x 210 - 175

= 35 x ( 215 - 210 ) - 175

= 35 x 5 - 175

= 175 - 175

= 0

e) 76 x 102 - 76 x 2

= 76 x ( 102 - 2 )

= 76 x 100

= 7600

c) 85 x 94 + 95 x 2 + 170 x 2

= 7990 + 2 x ( 95 + 170 )

= 7990 + 2 x 265

= 7990 + 530

= 8520

48 x 56 + 28 x 104

= 2688 + 2912

= 5600

g) 206 x 12 - 206 - 206

= 2472 - 206 - 206

= 2266 - 206

= 2060

37 x 25 + 37 x 35 + 37x 39 +  37

= 37x ( 25+ 35+ 39 + 1)

= 37 x 100

= 3700

\(37\times46+37\times51+111\)

\(=37\times46+37\times51+37\times3\)

\(=37\times\left(46+51+3\right)\)

\(=37\times100\)

\(=3700\)

------------

\(172\times47+86\times8-34\times4\)

\(=172\times47+172\times4-34\times4\)

\(=172\times\left(47+4\right)-34\times4\)

\(=172\times51-34\times4\)

\(=172\times3\times17-17\times2\times4\)

\(=17\times\left(172\times3-2\times4\right)\)

\(=17\times\left(516-8\right)\)

\(=17\times508\)

\(=8636\)

------------

\(35\times215-35\times200-175\)

\(=35\times215-35\times200-35\times5\)

\(=35\times\left(215-200-5\right)\)

\(=35\times10\)

\(=350\)

------------

\(48\times56+28\times104\)

\(=48\times2\times28+28\times104\)

\(=28\times\left(48\times2+104\right)\)

\(=28\times200\)

\(=5600\)

88 800

261 304

không phải nhé

là (37!) ở toán vui mỗi tuần phải k

52 = 37

7 = 5 + 2 

3 = 5 - 2

41 = 4 + 1 = 5

4 - 1 = 3

35 = 28

5 + 3= 8

5 - 3 = 2

25 = x

2+ 5 = 7

5 - 2 = 3 

x  = 37

-(35 - \(x\)) - (37 - \(x\)) = 33 - \(x\)

- 35 + \(x\) - 37 + \(x\) = 33 - \(x\)

           \(x\) + \(x\) + \(x\) = 33 + 35 + 37

           3\(x\)            = 105

             \(x\)            = 105 : 3

             \(x\)            = 35

câu này thiếu thiếu đúng ko bạn

ai biết ko ?

a=25x(725+250+25)

  =25x1000

  =25000

cái b tôi ko biết'