What is meant by combined operations?
The definition of combined operations is operations or calculations that involve more than two numbers and more than one operation.
What are the rules for combined operations?
The following are four rules for combined operations
- Put the numbers in parentheses first
- Addition and subtraction are equally strong, so calculation operations start from the left.
- Multiplication and division are equally powerful. So the calculation operation starts from the left.
- Multiplication and division are stronger than addition and subtraction, so the multiplication and division operations are performed before addition and subtraction.
Here are 7 examples of combined operations and their answers
1) 10 x (12 + 4) : (6 – 2) = 10 x (12 + 4) : (6 – 2)
= 10 x 16: 4
= 40
2) 23 x (8 + 6) : (7 – 5) = 23 x (8 + 6) : (7 – 5)
= 23 x 14: 2
= 161
3) 13 x (6 + 3) : (6 – 2) = 13 x (6 + 3) : (6 – 2)
= 13 x 8: 4
= 26
4) 25 : 5 + 3 x 4 = 25 : 5 + 3 x 4
= 5 + 12
= 17
5) 30 : 3 + 5 x 7 = 30 : 3 + 5 x 7
= 10 + 35
= 45
6) 35 + 14 – 12 x 3 : 2 = 35 + 14 – 36 : 2
= 35 + 14 – 18
= 49 – 18
= 31
7) 24 + 10 – 8 x 4 : 2 = 24 + 10 – 32 : 2
= 24 + 10 – 16
= 34 -16
= 18
