Final answer:
All the options provided, A) -18 + (-89), B) 32 + (-47), C) 87 + 250, and D) -16 + 3, are solved by adding the two numbers. When adding integers, if both numbers have the same sign, the result keeps that sign. If they have different signs, we subtract the smaller number from the larger and keep the sign of the number with the larger absolute value.
Step-by-step explanation:
The task is to identify which of the given expressions would be solved by adding the two numbers. Let's evaluate each expression separately.
- A) -18 + (-89): This expression involves adding two negative numbers. When two negative numbers are added together, the answer will also have a negative sign. Therefore, A is solved by adding the two numbers.
- B) 32 + (-47): This expression involves adding a positive number to a negative number. According to the rules of addition, we subtract the smaller number (32) from the larger numeral (47) and keep the sign of the larger absolute value. The operation is performed as addition after changing the sign of the negative number, thus B is also solved by adding the two numbers after sign change.
- C) 87 + 250: Both numbers are positive, so we simply add them together. This is a straightforward addition problem, so C is clearly solved by adding the two numbers.
- D) -16 + 3: Here, we have a negative number and a positive number. Similar to B, we would subtract the smaller number from the larger and keep the sign of the number with the larger absolute value. This is effectively handled as an addition problem after considering the sign, so D is also solved by adding the two numbers.
All the given options, A, B, C, and D, would be solved by adding the two numbers, following the rules for combining integers with different or the same signs.