Double facts are nothing additions in which a number is added to itself.
1 + 1, 2 + 2
Internalizing double facts are helpful building blocks in developing fluency in adding single digit numbers.
Problem 1 :
David has 10 candies. Daniel has the double of what David has. How many candies does Daniel have ?
No. of candies that Daniel has = Double of what David has
= 10 + 10
So, Daniel has 20 candies.
Problem 2 :
John has 12 cookies. Jose has the double of what John has. How many candies does Daniel have ?
No. of candies that Jose has = Double of what John has
= 12 + 12
So, Jose has 24 cookies.
Problem 3 :
Allen has 12 boxes of cookies. Lily has 4 more than the double of Allen has.How many boxes does Lily have ?
No. of boxes that Lily has = 4 more than the double of what Allen has
= 12 + 12 + 4
So, Lily has 28 cookies.
Problem 4 :
Joshua traveled 8 miles and Peter traveled the double of Joshua. How many miles did Peter travel ?
No. of miles that Peter traveled = Double of Joshua traveled
= 8 + 8
So, Peter traveled 16 miles.
Problem 5 :
Ethan has 4 pizzas boxes of cookies. Antony has 2 less than the double of what Ethan has.
No. of pizzas = 2 less than the double of what Ethan has
= 4 + 4 - 2
So, Antony has 6 boxes of cookies.
Problem 6 :
Ryan traveled 8 miles and James traveled 3 miles more than the double of Ryan. How many miles did James travel ?
No. of miles that James traveled = 3 miles more than the double of James
= 8 + 8 + 3
So, James traveled 19 miles.
Problem 7 :
Jonathan has 12 pencils. Samuel has 7 less than the double of Jonathan has. How many pencils does Samuel have ?
No. of candies that Samuel has = Double of what Jonathan has
= 12 + 12 - 7
= 24 - 7
So, Samuel has has 17 pencils.
Problem 8 :
Dylan is 7 years old. Benjamin's age is 3 years more than the double of Dylan's age. Find the age of Benjamin.
Age of Benjamin = 3 years more than the double of Dylan's age
= 7 + 7 + 3
So, Benjamin's age is 17 years.
Problem 9 :
Logan has $13. Brandon has $7 less than the double of Logan has. How much money does Brandon have ?
Money that Brandon has = $7 less than the double of Logan has
= 13 + 13 - 7
= 26 - 7
So, Brandon has $19.
Problem 10 :
In a game Jackson has scored 15 points. Luke has scored 14 points less than the double of Jackson. Who is the winner ?
Points scored by Jackson = 15 -----(1)
Points scored by Luke = 12 points less than the double of Jackson
= 15 + 15 - 14
= 30 - 14
= 16 -----(2)
Comparing (1) and (2), Luke has scored more points than Jackson.
So, Luke is the winner.
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Converting repeating decimals in to fractions