Properties & Number Lines
What property of addition is shown?
(3+8)+2 = 3+(8+2)
Associative Property of Addition
Is the value of -8 - 5 positive or negative?
Negative (-13)
Evaluate:
-15.5 + (-4.5)
-20
Evaluate:
-10 +18 - 5
3
A trail mix recipe calls for 1 3/4 cups of raisins. The recipe requires 3/8 cup less pecans than raisins and 7/8 cup more granola than raisins. How many cups of ingredients are in this recipe?
5 3/4 cups total
Raisins: 1 6/8
Pecans: 1 3/8
Granola: 2 5/8
1 6/8 + 1 3/8 + 2 5/8 = 5 3/4 cups total
Write the addition equation shown on a number line that starts at -4 and moves 6 units to the right.
-4+6=2
Is the solution to -6 - 4 +15 positive or negative?
Positive (5)
Evaluate:
8.4 - (-3.2)
11.6
Evaluate:
15 - 28 + 12 - 8
-9
What property states that changing the order of addends does not change the sum?
5+8=8+5
Commutative Property of Addition
Is the solution to -9 - (-12) + (-5) positive or negative?
Negative (-2)
Evaluate:
-2/5 + 4/5
2/5
Evaluate:
-14.8 - (-3.6) + (-12)
-23.2
Write an addition equation for a number line starting at 3 and then moving left 7 units.
3+(-7)=-4
is -15.8 + 20.2 positive or negative?
Positive (4.4)
Evaluate:
-1/3 - 1/2
-5/6
Evaluate:
-2 1/4 + 5 3/4 - (-2.25)
5.75 or 5 3/4