Easy Level Worksheet
Very Short Answer Questions (1 Mark Each)
(1) Write the additive inverse of −7.
Correct! The additive inverse of −7 is 7 because −7 + 7 = 0.
(2) Write the predecessor of 0.
Perfect! The predecessor (number before) 0 is −1.
(3) Write the successor of −5.
Excellent! The successor (number after) −5 is −4.
(4) Write the integer which is 5 more than −3.
Great! −3 + 5 = 2.
(5) Write all integers between −2 and 3.
Short Answer Questions (2 Marks Each)
Note: Answer each question with complete working and clear explanations.
(1) Represent −4 and 2 on a number line.
(2) Find the sum: −3 + (−5).
Perfect! Adding two negative numbers gives a negative result.
(3) Find the difference: 7 − (−2).
Excellent! Subtracting a negative is the same as adding a positive.
(4) Write the opposite of each: (a) Gain of 6, (b) Loss of 10.
(a) Opposite of gain of 6 =
(b) Opposite of loss of 10 =
(5) Add: −8 + 5.
Correct! Start at −8, move 5 units right to get −3.
Long Answer Questions (4 Marks Each)
Note: Answer each question with complete working and clear explanations.
(1) On a number line, show the addition −5 + 3 and write the result.
(2) Using a number line, show the subtraction 4 − 7 and write the result.
(3) Add: −7 + (−4) + 6.
Perfect! The final answer is −5.
(4) Subtract: −2 − (−8).
Excellent! Subtracting a negative becomes addition.
(5) A submarine is at 50 m below sea level. It dives 20 m deeper and then rises 15 m. Represent its position as an integer.
Final position: −55 m below sea level
Part B: Objective Questions (1 Mark Each)
Choose the correct answer and write the option (a/b/c/d)
(1) The additive inverse of 9 is:
(a) 9 (b) −9 (c) 0 (d) 1
Correct! The additive inverse of 9 is −9 because 9 + (−9) = 0.
(2) Which of these is not an integer?
(a) −3 (b) 0 (c) 2.5 (d) 7
Correct! 2.5 is a decimal, not an integer. Integers are whole numbers and their negatives.
(3) The opposite of loss of 8 is:
(a) 8 (b) −8 (c) 0 (d) −1
Correct! The opposite of loss of 8 is gain of 8 (represented as +8).
(4) −4 + (−3) =
(a) −7 (b) 7 (c) 1 (d) −1
Correct! Adding two negative numbers: −4 + (−3) = −7.
(5) 6 − (−2) =
(a) 4 (b) 8 (c) −8 (d) 12
Correct! 6 − (−2) = 6 + 2 = 8.
(6) On a number line, moving to the right means:
(a) Subtracting (b) Adding (c) Multiplying (d) Dividing
Correct! Moving right on a number line represents addition.
(7) −5 + 7 =
(a) 2 (b) −2 (c) 12 (d) 0
Correct! −5 + 7 = 2.
(8) The opposite of 0 is:
(a) 1 (b) −1 (c) 0 (d) 10
Correct! The opposite of 0 is 0 itself.
(9) The sum of an integer and its additive inverse is always:
(a) 1 (b) 0 (c) −1 (d) 2
Correct! Any number plus its additive inverse equals 0.
(10) −2 − 5 =
(a) −3 (b) −7 (c) 3 (d) 7
Correct! −2 − 5 = −2 + (−5) = −7.
Integer Concepts True or False
Determine whether these statements are True or False: