Operations on Integers Quiz

Why is understanding operations on integers important for exams like the Civil Service Examination?

• Because operations on integers are a common topic in these exams.

• Because integers are rarely used in exams.

• Because integers are not relevant to real-world applications.

• Because integers are only used in advanced mathematics.

What is the result of adding -25 and 16?

• -41

• 41

• -9

• 9

When adding integers with unlike signs, what should you do?

• Subtract the absolute values and use the sign of the smaller number.

• Add the absolute values and use the sign of the larger number.

• Subtract the absolute values and use the sign of the larger number.

• Add the absolute values and use the sign of the smaller number.

What is the result of subtracting -17 from 107 using the first method?

• 90

• 124

• 107

• 17

In the second method of subtraction, what happens when you multiply two negative signs?

• The result is positive.

• The result is undefined.

• The result is negative.

• The result is zero.

What is the product of -9 and -21?

• -189

• 189

• 30

• -30

When multiplying two integers with like signs, what is the sign of the product?

• Positive

• Negative

• Zero

• Undefined

What is the result of 21 times -4 plus 8 times -2?

• -84

• 84

• 100

• -100

In the expression 21 times -4 plus 8 times -2, which operation should be performed first?

• Division

• Multiplication

• Subtraction

• Addition

What is the rule for adding two negative numbers?

• Add the numbers and use a positive sign.

• Subtract the numbers and use a positive sign.

• Subtract the numbers and use a negative sign.

• Add the numbers and use a negative sign.