Download 8d- 3(2d- 5) = 8d+ (-3 x 2d) + (-3 x -5) = 8d- 6d+ 15

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Transcript
THE DISTRIBUTIVE PROPERTY
OF MULTIPLICATION
ANSWERS
THE DISTRIBUTIVE PROPERTY OF MULTIPLICATION ALLOWS US TO DISTRIBUTE OR GIVE MULTIPLICATION TO ADDITION OR
SUBTRACTION. IT MAKES NUMBERS EASIER TO WORK WITH AND ALLOWS US TO BREAK VARIABLES AND NUMBERS INTO PARTS.
WHEN A NUMBER OR VARIABLE IS NEXT TO
PARENTHESIS IT MEANS MULTIPLICATION.
4(2h + 3)
4 x (2h + 3)
(4 x 2h ) + (4 x 3)
4 x (2h + 3)
THE 2h AND 3 ARE STUCK
TOGETHER BUT THE
DISTRIBUTIVE PROPERTY
ALLOWS US TO BREAK
THEM APART.
WE NEED TO DISTRIBUTE OR
GIVE THE 4 TO THE 2h AND 3.
(8h ) + (12) = 8h + 12
THIS ALLOWS US TO MOVE THE
"h" MORE EASILY AND IS USEFUL
WHEN SOLVING EQUATIONS.
SEE HOW WE MULTIPLY
THE 2h AND 3 BY 4?
Now you turn. Use the Distributive Property to simplify each expression.
8d - 3(2d - 5)
= 8d + (-3 x 2d ) + (-3 x -5)
THE 3 WAS MULTIPLIED,
= 8d - 6d + 15 WHEN
DID YOU SEE THAT THE MINUS
OR NEGATIVE WENT WITH IT.
= 2d + 15
(-3 x 2d) = -6d and (-3 x -5) = +15.
1.
7(3 + 5h ) - 11
4.
3.
8e - 8
3(6k - 3) + 7(1 + k )
6.
-9u - 28
2(3 - 4m ) - 4(2m - 4)
25k - 2
17 - 8(6g + 2) + 17g
7.
-16m + 22
4 + 2(4e - 6)
15a + 35
9u - 9(2u + 4) + 8
5.
35h + 10
7.
5(3a + 7)
2.
10(9 - 5w ) - 6(-12 - 9w )
9.
-31g + 1
4w + 162
Fill in the empty boxes, find the answers, and shade. Be careful with the negative and positive numbers.
*
-13
6 3r + 5
*
=
18r
+ 6x5
2r
5
45
7
30
+
-22b
= 5 x 9 + 5 x 8n - 20
=
45
+
= 40n +
MATHCRUSH.COM
40n
- 20
13
-2b
2y
143
-
21
-2b - 13
11
= 11 x -2b + 11 x -13
18r
6
= -22b
35
22 7 8 2b
21
18r
*
48n
7
= -24k
-28d
4
-6
13
11
-24k
-21
40n
2r 22
-21
- 20
8
25
3r
-24k
40n
- 24
9 + 8n
-4
-4
48n
-4
5
25
= -3 x 8k + -3 x 7
2b
-2b
8n
-13
6
4
*
21
-3 8k + 7
*
y
13
y
2y
-6
-143
2b
-22b
-4 x 7d + -4 x 6
11
11
30
-4 7d - -6
= -28d
45
40n
= 6 x 3r
=
-28d
3r
45
30
+
-143
8
25
=
*
7
7
x y
y + 8
+
7 x8
= 7y + 56
25
LEVEL 3