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The Distributive Property
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The distributive property is mental math strategy that can be used when multiplying.
43 x 5 =?
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Break apart the double-digit number.
43 x 5 =? +
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Then multiply each part by 5.
43 x 5 =? + x 5 x 5
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Then multiply each part by 5.
43 x 5 =? + x 5 x 5
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Finally, sum your two products
43 x 5 =215 + x 5 x 5 + = 215
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Let’s look at another example.
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Break apart the double-digit number.
53 x 6 = ?
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Break apart the double-digit number.
53 x 6 = ? +
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Multiply each part by 6. 53 x 6 = ? + x x 6
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Multiply each part by 6. 53 x 6 = ? + x x 6
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Sum the two products. 53 x 6 = 318 + x x 6 = 318
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There are three steps to the distributive property.
4 x 28 =
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There are three steps to the distributive property.
4 x 28 = 1) Break apart the double-digit number.
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) 1) Break apart the double-digit number.
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) Break apart the double-digit number. Multiply each part by 4. (distribute the 4)
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) = (4 x 20) + (4 x 8) Break apart the double-digit number. Multiply each part by 4. (distribute the 4)
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) = (4 x 20) + (4 x 8) Break apart the double-digit number. Multiply each part by 4. (distribute the 4) Sum the two products.
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) = (4 x 8) Break apart the double-digit number. Multiply each part by 4. (distribute the 4) Sum the two products.
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) = Break apart the double-digit number. Multiply each part by 4. (distribute the 4) Sum the two products.
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There are three steps to the distributive property.
4 x 28 = 4 x (20 + 8) = = 112 Break apart the double-digit number. Multiply each part by 4. (distribute the 4) Sum the two products.
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The word “distribute” means “to give out.”
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Distribute the cubes to the girls.
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Distribute the cubes to the girls.
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Distribute the cubes to the girls.
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Distribute the cubes to the girls.
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Distribute the cubes to the girls.
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Distribute the cubes to the girls.
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In this example, the 5 was distributed.
5 x 38 = 5 x (30 + 8) = (5 x 30) + (5 x 8)
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In this example, the 7 was distributed.
7 x 46 = 7 x (40 + 6) = (7 x 40) + (7 x 6)
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Find the area of the rectangle. Area = length x width
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Find the area of the rectangle. Area = length x width
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Find the area of the rectangle. Area = length x width
20 ft ft
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Find the area of the rectangle. Area = length x width
20 ft ft
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Find the area of the rectangle. Area = length x width
20 ft ft
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Find the area of the rectangle. Area = length x width
Find the area of each rectangle. 6 ft 6 ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Find the area of each rectangle. 6 ft 6 ft 6 x 20 = 120 sq ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Find the area of each rectangle. 6 ft 6 ft 6 x 20 = 120 sq ft 6 x 4 = 24 sq ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Find the area of each rectangle. 6 ft 6 ft 120 sq ft 24 sq ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Now put the two rectangles back together. 6 ft 6 ft 120 sq ft 24 sq ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Now put the two rectangles back together. 6 ft 120 sq ft 24 sq ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Now put the two rectangles back together. 6 ft 120 sq ft 24 sq ft 20 ft ft
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Find the area of the rectangle. Area = length x width
Now put the two rectangles back together. 6 ft 120 sq ft + 24 sq ft 24 ft
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Find the area of the rectangle. Area = length x width
Now put the two rectangles back together. 6 ft 144 sq ft 24 ft
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A swimming pool has a shallow end and a deep end
A swimming pool has a shallow end and a deep end. Find the surface area of the pool. deepwater 8 yds shallow water 5 yds 10 yds
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Break the pool into a deep end and a shallow end.
deepwater 8 yds 8 yds shallow water 10 yds 5 yds
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Find the area of the deep end.
deepwater 8 yds 8 yds shallow water 10 yds 5 yds
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Find the area of the deep end.
8 x 5 = 40 8 yds 8 yds shallow water 10 yds 5 yds
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Find the area of the shallow end.
8 x 5 = 40 8 yds 8 yds shallow water 10 yds 5 yds
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Find the area of the shallow end.
8 x 5 = 40 8 yds 8 yds 8 x 10 = 80 10 yds 5 yds
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Now sum the two areas together.
8 x 5 = 40 8 yds 8 yds 8 x 10 = 80 10 yds 5 yds
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Now sum the two areas together.
40 80 + 8 yds 10 yds 5 yds
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= 120 square yards 40 80 8 yds 5 yds 10 yds
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Write an expression that shows how to find the area of the rectangle and uses the distributive property. 9 yds 5 yds 20 yds
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Find the areas for each individual rectangle.
9 yds 5 yds 20 yds
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Find the areas for each individual rectangle.
9 yds (9 x 5) 5 yds 20 yds
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Find the areas for each individual rectangle.
9 yds (9 x 5) (9 x 20) 5 yds 20 yds
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Sum the two areas. 9 yds + (9 x 5) (9 x 20) 5 yds 20 yds
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(9 x 5) + (9 x 20) = area 9 yds (9 x 5) (9 x 20) 5 yds 20 yds
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Practice Time
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1) Which of the following expressions shows the distributive property for 5 x (3 + 7)?
(5 x 3) x (5 x 7) (5 x 3) + (5 x 7)
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1) Which of the following expressions shows the distributive property for 5 x (3 + 7)?
Correct! (5 x 3) + (5 x 7)
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2) Which of the following expressions shows the distributive property for 3 x (9 + 4) ?
(3 x 9) + (3 x 4) (3 + 9) + (3 + 4) (3 + 9) x (3 + 4)
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2) Which of the following expressions shows the distributive property for 3 x (9 + 4) ?
(3 x 9) + (3 x 4) Correct!
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3) Which of the following expressions is equivalent to: and shows the distributive property. 2 x (2 + 3) 3 x (2 + 3)
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3) Which of the following expressions is equivalent to: and uses the distributive property. 2 x (2 + 3) Correct!
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4) Which of the following expressions is equivalent to: (4 x 3) + (4 x 8) ?
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4) Which of the following expressions is equivalent to: (4 x 3) + (4 x 8) ?
Correct! 4 x (3 + 8)
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5) Which of the following expressions is equivalent to: (5 x 9) + (5 x 3) ?
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5) Which of the following expressions is equivalent to: (5 x 9) + (5 x 3) ?
Correct!
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 yds 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 yds 4 yds 4 x 3 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 yds 4 yds 4 x 3 4 x 9 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 x 3 4 x 9 4 yds 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 x 3 4 x 9 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 x 3 4 x 9 4 yds 3 yds 9 yds
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6) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 4 x 3 + 4 x 9 4 yds 3 yds 9 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 yds 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 yds 6 yds 6 x 4 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 yds 6 yds 6 x 4 6 x 8 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 x 4 6 x 8 6 yds 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 x 4 6 x 8 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 x 4 6 x 8 6 yds 4 yds 8 yds
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7) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 6 x 4 + 6 x 8 6 yds 4 yds 8 yds
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8) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 5 yds 2 yds 10 yds
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8) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 5 yds 5 x 2 5 x 10 2 yds 10 yds
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8) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 5 x 2 + 5 x 10 5 yds 2 yds 10 yds
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9) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 8 yds 3 yds 5 yds
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9) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 8 yds 8 x 3 8 x 5 3 yds 5 yds
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9) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 8 x 8 x 5 8 yds 3 yds 5 yds
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10) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 5 yds x yds 10 yds
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10) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 5 yds 5x 5 ∙ 10 x yds 10 yds
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10) Write an expression that shows how to find the area of the rectangle and uses the distributive property. 5x + 5 ∙ 10 5 yds x yds 10 yds
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11) Which expression is equivalent to 3(x + 7)?
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11) Which expression is equivalent to 3(x + 7)?
Correct! 3x + 21
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12) Which expression is equivalent to 4(x + 5)?
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12) Which expression is equivalent to 4(x + 5)?
Correct!
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13) Which expression is equivalent to 8(x + 2)?
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13) Which expression is equivalent to 8(x + 2)?
Correct!
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14) Which expression is equivalent to 2(x + 3)?
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14) Which expression is equivalent to 2(x + 3)?
Correct!
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The End.
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