Addition Strategies
Name the addition fact strategy used when a number is added to itself. 3 + 3 = ___
Doubles: 6
Name the subtraction fact strategy used for this fact: 10 - 5 = 5
Take Half Fact - Opposite of doubles facts for addition
There were 5 salmon swimming in the stream, 6 more joined them. How many salmon were there all together?
5 + 6 = 11 Doubles +/- 1
The answer to an addition problem.
The Sum
8 + __ = 10
Make 10 fact: 2
Name the addition fact strategy used when pairs of numbers equal 10. 6 + 4 = ___
Make 10 Fact
Name the subtraction strategy for this equation: 13 - 3 = 10
Back to 10 Facts
Jessica had 10 jellybeans, Marcus had 7. How many more jellybeans did Jessica have?
10 - 7 = 3
The answer to a subtraction problem.
The difference
4 + 5 = __
Doubles +/- 1: 11
Name the addition fact strategy used when 10 is added to any number. 3 + 10 = __
Add Ten Fact
Name the subtraction fact strategy for this equation: 7 - 7 = 0
Take All Facts
Jill had 15 cents. She spent 10 cents on a new pencil. How much money does she have left?
15 - 10 = 5 cents
Give an example of an even number and explain your thinking.
9 - 2 = ___
Count back fact: 7
Explain how to use the addition fact strategy add 9 to solve 6 + 9 = ___.
Add 9 Fact - Think "how many to 10": 15
Name the subtraction strategy to use when we see - 1, - 2, or - 3.
Count back fact
Ronan and Josue were playing battling bugs. Ronan rolled a 9 and Josue rolled a 3. How many more squares did Ronan get to shade on his record sheet?
9 - 3 = 6
6 + 3 = 9
Give an example of an odd number and explain your thinking.
Multiple correct responses
3 + 7 = ___
Make 10 or count on: 10
What addition fact strategy would you use to solve this equation: 3 + 4 = ___?
Multiple correct responses - justify answer with explanation :)
Explain how I can use subtraction to solve this addition problem: 8 + ___ = 10
10 - 8 = 2 Fact Family
Davyd is playing the game turn them over and rolled an 11. What 2 cards can he turn over that would also make 11?
10 + 1, 9 + 2, 8 + 3, 7 + 4, 6 + 5
Multiple responses :)
True or false: You should always use the least number of pushes when using the number rack?
True
15 - 5 = ___
Back to 10 fact: 10