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Math 7
Unit 6 Worksheet
Name:
A. What integers do the following represent?
1.
+3
2.
+3
3.
-4
B. Draw integer tiles to model the following numbers in two different ways.
1.
-5
2.
3
3.
-6
4.
4
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Math 7
Unit 6 Worksheet
C. What addition equation does each set of tiles represent?
Example
(-4) + (+2) = -2
+
=
1.
(+3) + (-3) = 0
+
=
2.
(-2) + (+5) = +3
+
=
3.
(+1) + (-3) = -2
+
=
D. Draw red and yellow tiles to model each addition question. Find the sum.
1.
(-5) + (+1) = _-4_
+
2.
(+5) + (-7) = _-2_
+
3.
(-1) + (+6) = _+5_
4.
(-3) + (+8) = _+5_
+
+
E. Use a number line to represent the expressions. Find the sum. Each number
line should include 2 arrows – one for each number. Check the lesson to see how
integers are represented on the number line with arrows.
1.
(+1) + (+4) = _5__
2.
(-1) + (-1) = _-2__
3.
(+3) + (-4) = _-1__
4
(-5) + (+3) = _-2__
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Math 7
Unit 6 Worksheet
F. Solve the following:
1.
(-4) + (+7) = +3
2.
(+2) + (-6) =-4
3.
(+9) + (-8) =+1
4.
(-1) + (+6) =+5
5.
(-3) + (-3) =-6
G. Write the opposite integer of each of the following:
1.
-2
2
2.
5
-5
3.
-6
+6
4.
-11
+11
5.
145
-145
H. Which subtraction question does this set of tiles represent?
1.
Answer:____(-3) – (+2) = -5
_____________
2.
Answer:______(+2) – (-1) = +3________
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Math 7
Unit 6 Worksheet
I. Solve each of the following questions:
1.
(+9) - (-8) = +17
2.
(+3) - (+7) = -4
3.
(-2) - (+6)= -8
4.
(-3) - (-4) = +1
5.
(+1) - (-4) = +5
J. Find the missing number
1.
(-4) + (_+7 ) = +3
2.
(-6) - (_-1) = -5
3.
(_+2) - (-2) = 4
4.
(_-5) + (+3) = -2
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Math 7
Unit 6 Worksheet
K. Problem solving - be sure to write the equation to reflect the information in the
question.
Example: Barb was on the 5th floor and took the elevator down 3 floors. What floor did she get
off on? Write this as an addition equation. Answer: 5 + -3 = 2
1. Shane got $10 for his allowance and spent $3. Write an addition equation to represent this
situation.
(+10) + (-3) = +7
2. The temperature in the morning was -3 C and rose by 8 C during the day. Write an addition
equation to represent this situation.
(-3) + (+8) = +5
3. The hot air balloon started at 40 m and descended 10 m. Write a subtraction equation to
represent this situation.
(+40) – (+10) = +30
4. Anna paid Justin $8 she owed him then bought a book for $5. Write a subtraction equation to
represent Anna’s situation.
(-8) – (+5) = -13
5. The morning temperature was -9 and the afternoon temperature was +5. What was the overall
change in the temperature? If you need to, draw a model of a thermometer.
(+5) – (-9) = +14
6. In golf, par is the number of shots a player should make on the course. If par is 72 and the
player shoots 71, they are 1 under par or -1. If they shoot 75 they are three over par or +3.
On Friday, Brandice shot +2 and Glenda shot -3. What is the difference in their golf scores? If
you need to, use a number line to determine the answer.
(+2) - (-3) = +5
7. Create your own word problem that involves integer subtraction.
Various
Answers: A. 1)+3 3)-4 C. 1) (+3) + (-3) = 0 3)(+1) + (-3) = -2 D. 1) -4 3) +5 E. 1) 5 3)-2 F. 1) +3 3) +1 5) -6 G.
1) +2 3) +6 5) -145 H. (-3) – (+2) = (-5) 3) (-1) – (-3) = +2 I. 1)+17 3) -8 5)+5 J. 1) +7 3)+2 K. 1) (+10) + (-3) =
+7 3) (+40) – (+10) = +30 5) (+5) – (-9) = +14 7) various answers but must show subtraction
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