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    Second Grade
    Today

    Unit test · Weeks 13–18 · 40–45 min · 54 points

    Math Unit 3 Test: Operations & Algebraic Thinking

    Name Date

    Part 1: Fluency Within 20

    Write the answer.

    1. 7 + 8 = ____
    2. 6 + 9 = ____
    3. 8 + 8 = ____
    4. 7 + 6 = ____
    5. 9 + 3 = ____
    6. 8 + 6 = ____
    7. 4 + 9 = ____
    8. 5 + 6 = ____
    9. 3 + 8 = ____
    10. 2 + 9 = ____
    11. 15 − 8 = ____
    12. 11 − 4 = ____
    13. 17 − 9 = ____
    14. 12 − 3 = ____
    15. 13 − 5 = ____
    16. 14 − 8 = ____
    17. 11 − 9 = ____
    18. 14 − 9 = ____
    19. 15 − 6 = ____
    20. 12 − 8 = ____

    Part 2: Word Problems (1- and 2-step)

    Read the story. Draw a bar model. Write an equation with a ? for the unknown. Write the answer with a word.

    1. Some birds were in a tree. 15 more birds came. Now there are 33 birds. How many birds were in the tree at first?
    2. Omar had 54 stickers. He gave away 18 stickers. How many stickers does he have left?
    3. Lena has 51 shells. Kai has 27 shells. How many fewer shells does Kai have than Lena?
    4. There are 63 books on two shelves. 24 books are on the top shelf. How many books are on the bottom shelf?
    5. Ivy has 34 marbles. Ben has 12 more marbles than Ivy. How many marbles do they have together?
    6. A bus had 46 people on it. At the first stop, 19 people got off and 23 people got on. How many people are on the bus now?

    Part 3: Odd & Even

    Answer each question. Draw pairs if it helps.

    1. Is the number odd or even? (a) 19 (b) 12
    2. Write each even number as the sum of two equal numbers. (a) 16 = ____ + ____ (b) 14 = ____ + ____
    3. Draw 11 dots in pairs. Is 11 odd or even? How do you know?
    4. Two sisters want to share 15 grapes fairly, with none left over. Can they? Why?

    Part 4: Arrays & Repeated Addition

    Draw or look at the array. Write an addition equation and the total.

    1. An array has 3 rows with 4 stars in each row. Write a repeated addition equation. How many stars?
    2. Draw an array with 2 rows and 5 columns. Write the equation. How many in all?
    3. An array has 4 rows with 3 dots in each row. Write one equation for the rows and one for the columns.
    4. A muffin tray has 4 rows. Each row has 5 muffins. How many muffins? Write the equation.