Question

60:4+81:3 76:2-91:13 720:10+640:8

Answer 1

60:4+81:3=15+17=32
76:2-91:13=38-7=31
720:10+640:8=72+80=152

Answer 2

1)=42
2)=31
4)=152
....................

Answer 3

To solve the given expressions, we need to perform the operations within the colons. The notation "a:b" represents "a divided by b."

1. 60:4 + 81:3 Calculating each part: 60:4 = 60 / 4 = 15 81:3 = 81 / 3 = 27 Now, we add them together: 15 + 27 = 42

2. 76:2 - 91:13 Calculating each part: 76:2 = 76 / 2 = 38 91:13 = 91 / 13 = 7 Now, we subtract them: 38 - 7 = 31

3. 720:10 + 640:8 Calculating each part: 720:10 = 720 / 10 = 72 640:8 = 640 / 8 = 80 Now, we add them together: 72 + 80 = 152

So, the solutions to the given expressions are:

1. 60:4 + 81:3 = 42
2. 76:2 - 91:13 = 31
3. 720:10 + 640:8 = 152