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Fact Family

Fact Family. – A group of facts that are a family and share the same numbers. Fact Families for addition and subtraction. The 6, 3, 9 Family. 6+3=9 3+6=9. 9-6=3 9-3=6. Relationship. The situation or fact of being related; connected or associated. Model.

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Fact Family

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  1. Fact Family – Agroup of facts that are a family and share the same numbers Fact Families for addition and subtraction. The 6, 3, 9 Family 6+3=9 3+6=9 9-6=3 9-3=6

  2. Relationship The situation or fact of being related; connected or associated.

  3. Model • An example that stands for an idea.

  4. How Much?How Many? • Asking for an amount or quantity • If Sally fed each bird 2 slices of bread. How many slices of bread did she feed all of the birds?

  5. Addition Add • Joining or combining together

  6. Count On • Begin with the largest number and count on up until you have used up all of the smaller number.

  7. Doubles • These are "easy" to learn because the number is just doubled. • 1 + 1 =2 • 2 + 2 = 4 • 3 + 3 = 6 • 4 + 4 = 8

  8. Sum • The total or whole amount when combining two amounts. • 6 + 4 = 10 sum

  9. JoinPut Together • Combining two or more numbers. • The man walked two barking dogs and two quiet dogs. How many dogs did he walk in all?

  10. PlusPlus Sign Plus: to increase by the adding two numbers. 4 + 3 = 7 Plus sign: Used to show addition.

  11. TotalIn AllAltogether • The whole amount, • The whole amount of numbers added together • 2 adults and 3 children went rollerblading. The total number of people rollerblading was 5.

  12. two things with the same value or amount Equal The pickup truck and the car have an equal number of wheels.

  13. Number Sentence An equation or a comparison 5+1=6 equation 9 > 2 comparison

  14. Plus Zero • Zero added to any number will always equal that number. • If you have 5 pieces of gum, and I don't give you any more, how many pieces of gum do you have?"

  15. Plus One • Plus One facts are just adding one more • Two friends were having lunch 1 friend joined them. How many friends ate lunch together?

  16. Plus Two • Plus Two facts are just two more than the number being added to two. • Five apples are in the basket. Two apples are outside of the basket. How many apples are there in all?

  17. Doubles Plus One • For “neighboring” numbers, double the smaller number and add one. • 5 + 6 = • 5 + 5 +1= 6 5

  18. Doubles Plus Two • For two numbers that are two apart, double the smaller number and add two. • 5+ 7 = • 5 + 5 + 2= 7 5

  19. Ten Facts 4 apples in the bowl plus 6 apples in the tree equal a total of 10 apples. • Numbers when added together equal ten. • 1+9=10 6+4=10 • 2+8=10 7+3=10 • 3+7=10 8+2=10 • 4+6=10 9+1=10 • 5+5=10

  20. Plus Ten • When adding ten to a number the ten’s place increases by ten. • 10 + 2 = 12 • 10 + 50 = 60 • 10 + 35 = 45 • 10 + 148 = 158

  21. – The repetition of numbers or objects; list of numbers that follow a rule Pattern ____ 3, 6, 9, 12,__,18 What comes next in the pattern?

  22. Subtraction Subtract The action of taking away or comparing groups. X X Minus Sign

  23. Difference • The amount by which one quantity is greater or less than another. There are 3 women and 2 men. What is the difference between the number of women and men?

  24. two things with the same value or amount Equal The pickup truck and the car have an equal number of wheels.

  25. Take Away • Taking away will make the larger number smaller. • There were eight pieces of candy in a box. One fell out. How many pieces of candy were left in the box?

  26. Separate • Separating a smaller amount from the larger number will reduce the larger number. • 7 cars were on the highway. Then 2 of the cars were in an accident. How many cars were not in the accident?

  27. How Much More?How Many More? • Comparing two amounts and finding the difference. • The larger amount will be that much greater. • The lion did 3 tricks. The tiger did 1 trick. How many more tricks did the lion do than the tiger?

  28. How Many Fewer ? How many less? • Compare the amounts and find the difference. • The smaller amount will be that much less. • How many fewer children are there than adults?

  29. Number Sentence 5 - 1= 4 equation Minus Sign

  30. Take Away Zero • Zero taken away from any number will always equal that number. • If you have 3 pieces of candy, and you don't give any away. How many pieces of candy do you have?"

  31. Take Away One • One taken away from any number will be one less than that number. • 4 friends were running along the beach. 1 ran into the water. How many did not run into the water?

  32. Take Away Two • Plus Two facts are just two more than the number being added to two. • Six cookies were on the plate. Santa ate two. How many cookies were left?

  33. Count Down • Begin with the largest number and count back until you have used up all of the smaller number.

  34. Take Away Ten • When taking away ten from a number the ten’s place decreases by ten. • 13 – 10 = 3 • 40 – 10 = 30 • 56 – 10 = 46

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