10.Evaluate the following.
[9]=
answer 9
[-14]
Answer = -14
Add:
-3+4
My answer 1
-4+(-5)
My answer -9
-57+(-38)
my answer -95
-53+38
My answer -15
To evaluate the expressions you've provided, you simply need to perform the indicated addition operations.
For -3 + 4:
To add two numbers with different signs, we subtract the number with the larger absolute value from the other number, and keep the sign of the number with the larger absolute value. In this case, 4 has a larger absolute value, so we subtract 3 from 4: 4 - 3 = 1. Therefore, -3 + 4 = 1.
For -4 + (-5):
To add two numbers with the same sign (both negative), we add their absolute values and keep the negative sign. In this case, the absolute values of -4 and -5 are both 4 and 5 respectively, so we add 4 and 5: 4 + 5 = 9. Since both numbers are negative, the answer is -9.
For -57 + (-38):
Again, we add two numbers with the same sign (both negative). We add the absolute values of -57 and -38: 57 + 38 = 95. Since both numbers are negative, the answer is -95.
For -53 + 38:
To add two numbers with different signs, we subtract the number with the larger absolute value from the other number, and keep the sign of the number with the larger absolute value. In this case, 53 has a larger absolute value, so we subtract 38 from 53: 53 - 38 = 15. Since the sign of -53 is negative, the answer is -15.
So, the evaluated expressions are:
-3 + 4 = 1
-4 + (-5) = -9
-57 + (-38) = -95
-53 + 38 = -15