distributive property the distributive property of multiplication over addition multiplying a sum by...
TRANSCRIPT
Distributive Property
• The Distributive Property of Multiplication over Addition
• Multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products
• 5 X (7 + 9) = (5 X 7) + (5 X 9)
Distributive Property
• This property can also be used over subtraction.
• 2 X ( 10 – 8) = (2 X 10) – (2 X 8)
Distributive Property
• Use the Distributive Property to find the product.
• 8 X 59 = 8 X ( + ) use a multiple of 10 + 9• = ( 8 X ) + ( 8 X )• = +• =
Distributive Property
• Another way is for subtraction.
• 8 X 59 = 8 X ( - 1) use a multiple of 10 • = ( X 60) – (8 X ) • = -- • =
Distributive Property
• Practice workbook page 67 . Complete together to show the distributive property in a grid to find the product.
Distributive Property
• Demonstrate the following expressions using the distributive property.
• 12 X 18 20 X 23
Distributive Property
• 30 X 33 2 X 59
Distributive Property
• Restate the expression using the distributive property.
• 6 X ( 9 + n ) when n is 30
Distributive Propery
• Restate
• 7 X ( n + 5) if n is 50
Distributive Property
• Solve using the distributive property.• 3 X 78
• 3 X ( + )• ( 3 X ) + ( 3 X )• +
Distributive Property
• Restate
• n X (8 + 60) if n is 3
Distributive Property
• Find the value of n.
• 7 + n = 4 + 32
• n + 19 = 22 + 14
Distributive Property
Complete on an index card and give to me.Solve the following using the Distributive
Property Tom drives 42 miles a day to commute to work.
When he drives 5 days, how many miles does he drive to work?