Question

400:(230-190)•8=, 600:(780-680)•9=, 36000:1000:4

Answer 1

1)400:(230-190)•8=80
1)230-190=40
2)400:40=10
3)10•8=80
2)600:(780-680)•9=54
1)780-680=100
2)600:100=6
3)6•9=54
3)36000:1000:4=9
1)36000:1000=36
2)36:4=9

Answer 2

400:(230-190)*8=400:40*8=10*8=80 600:(780-680)*9=600:100*9=60*9=540 36000:1000:4=36:4=9

Answer 3

Sure! Let's break down each of the calculations step by step.

Calculation 1: 400:(230-190)•8

To solve this expression, we need to follow the order of operations, which is typically expressed as PEMDAS or BIDMAS. This stands for Parentheses/Brackets, Indices/Exponents, Division/Multiplication, and Addition/Subtraction.

1. Start by evaluating the expression inside the parentheses: (230-190) = 40. 2. Now we have 400:40•8. Next, perform the division: 400 divided by 40 equals 10. 3. Finally, multiply the result by 8: 10•8 = 80.

Therefore, 400:(230-190)•8 = 80.

Calculation 2: 600:(780-680)•9

Let's apply the same steps to this expression:

1. Evaluate the expression inside the parentheses: (780-680) = 100. 2. Now we have 600:100•9. Perform the division: 600 divided by 100 equals 6. 3. Multiply the result by 9: 6•9 = 54.

Therefore, 600:(780-680)•9 = 54.

Calculation 3: 36000:1000:4

Again, let's go through the steps:

1. Evaluate the first division: 36000 divided by 1000 equals 36. 2. Now we have 36:4. Perform the division: 36 divided by 4 equals 9.

Therefore, 36000:1000:4 = 9.

To summarize: - 400:(230-190)•8 = 80. - 600:(780-680)•9 = 54. - 36000:1000:4 = 9.

If you have any further questions, please let me know!