Question

(720+9080)*3=?,(3010-43,0)*9,(130-50)*(42-35),(210+90):(60-57),6*8:3, 8*9:2

Answer 1

1.(720+9080)*3=9800*3=29400

2.(3010-43,0)*9=2967*9=26703

3.(130-50)*(42-35)=120*7=840

4.(210+90):(60-57)=300:3=100

5.6*8:3=48:3=16

6.8*9:2=72:2=36

Answer 2

(720+9080)*3=29400

  720+

9080

9800

 

  9800*

        3

29400

 -----------------------

 (3010-43,0)*9= 

3010-

   43

2957 

 

  2957*

        9

26613

 ---------------------

(130-50)*(42-35)

 

130-

  50

  80

 

42-

35

  7

 

80*7=560

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

(210+90):(60-57)

210+

  90

300

 

60-57=3

 

300*3 = 900

 ------------------------

6*8:3 = 48:3 = (берем по 1, сносим 1 и 8, 18 разделить на 3 равно 6) = 16

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

8*9:2 = 72:2 = (берем по 3, сносим 1 и 2, 12 разделить на 2 равно 6) = 36

Answer 3

Let's calculate the expressions you provided step by step:

1. (720 + 9080) * 3: Adding 720 and 9080 gives 9800, and then multiplying by 3 results in 29,400.

2. (3010 - 43,0) * 9: There seems to be a typographical error in the expression you provided. It seems you intended to subtract 430 from 3010. Thus, we have: 3010 - 430 = 2580 Multiplying 2580 by 9 gives 23,220.

3. (130 - 50) * (42 - 35): Subtracting 50 from 130 gives 80, and subtracting 35 from 42 gives 7. Multiplying 80 by 7 results in 560.

4. (210 + 90) : (60 - 57): Subtracting 57 from 60 gives 3, and adding 210 and 90 gives 300. Dividing 300 by 3 results in 100.

5. 6 * 8 : 3: Multiplying 6 by 8 gives 48, and then dividing by 3 gives 16.

6. 8 * 9 : 2: Multiplying 8 by 9 gives 72, and dividing by 2 results in 36.

So, the calculations are as follows:

1. (720 + 9080) * 3 = 29,400
2. (3010 - 430) * 9 = 23,220
3. (130 - 50) * (42 - 35) = 560
4. (210 + 90) : (60 - 57) = 100
5. 6 * 8 : 3 = 16
6. 8 * 9 : 2 = 36