T4T Cluster 1 CFA (Common Formative Assessment) 2 Odd Even, Arrays, Word Problems
Name:_____________________________________________ Date:___________________
Directions: Read each question carefully. Complete each problem. Demonstrate your knowledge with each problem by answering the questions.
1) Is 16 an even number? Describe & Demonstrate your thinking (How do you know?).
2) Tell how many are in each figure below. Circle to tell if the number is even or odd.
Are the amount of Shoes Even or Odd? _______________ Write an equation that represents this array: ____________________  b. How many shoes? ____________
Are the amount of Shoes Even or Odd? _______________ Is this an array? ___________________  c. Draw an EVEN array for 8.
Write an equation that represents this array: ____________________ 
Explain how you determine if a number is odd or even:

3) Jane asks her mom for an even number of beads to put on her bracelet Draw an even number of beads on the bracelet for Jane.
Write an equation with two equal addends to show that Jane’s number of beads is even._________________________________________________________
4) 15 – 7 = ___
Solve the problem. Use the number line to explain your reasoning.
5) Zack has 3 inches of string. Maddy gives Zack 16 inches of string. How many inches of string does Max have now?
Solve the problem. Draw a number line and demonstrate your reasoning and write an equation showing your solution.
6) 7 + 5 = ____
Solve the problem. Show how you solved the problem.
7) Complete each equation.
6 + 7 = ___
5 + ___= 11
8 + 9 = ___
___ + 8 = 15
Which strategies could be used to solve each of these equations? Explain your thinking.
8) Angel earned 5 dollars last week for doing chores and 9 dollars this week. Angel says he has 14 dollars because 5 + 5 = 10 and 10 + 4 = 14. Is Angel correct? Explain your thinking using pictures, numbers, or words.
9 & 10) Create your own doubles fact word problem. Show how you would want another student to solve the problem. Write your doubles fact word problem on the next page and give to a student to solve.
Image of shoe by ClkerFreeVectorImages from Pixabay
Image of Bracelet by OpenClipartVectors from Pixabay
Name:_____________________________________ Date:______________________________
I have a problem from (student name who wrote the word problem)_______________________
(Write your word problem here for a student to solve)
_________________________________________________________________________________________
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I gave this problem to _________________________________________________________
Student’s Solution to the word problem goes here. Show how you solved the problem. Demonstrate your reasoning/show your solution and explain.
ANSWER KEY
1. Yes. 16 is even because it can be shared fairly in two equal groups.
2. a. 9 odd
b. 8 even; 4 + 4 = 8
c. Answers Vary
3. answers vary; number of beads must be even and equation must show equal addends
4. 8
5. 19
6. 12
7. a. 13
b. 6
c. 17
d. 7
Each problem could be solved using doubles plus one.
8. Angel is correct. He decomposed the 9 into 5 and 4 so that he could use doubles (5 + 5 = 10) and then he added the 4 back on (10 + 4 = 14).
9 & 10) Students create a word problem, solve it, then give it to another student to solve. Students need to demonstrate mastery.