2nd Grade Fluency Within 20, Even and Odd Numbers Test Solutions and Scoring (PDF)

2nd Grade math test solutions: Fluency Within 20, Even and Odd Numbers – Maths PDF

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This fluency even odd test answers for 2nd Grade covers fluency within 20, even and odd numbers (Common Core 2.OA.B.2, 2.OA.C.3), with a free PDF to print.

Use this key to score the test. Each solution shows the work and a scoring guide. Give part credit when the method is correct but a small slip changes the answer.

Grade 2 · Common Core State Standards: 2.OA.B.2, 2.OA.C.3

Fluency even odd test answers: worked solutions

Question 1 – Facts within 20 [4 pts]

\(7 + 8 = 15\)
\(9 + 7 = 16\)
\(15 – 9 = 6\)
\(13 – 6 = 7\)

15, 16, 6, 7

Scoring: 1 point for each correct answer.

Question 2 – Missing number [2 pts]

\(17 – 9 = 8\), so the missing number is 8.
\(5 + 9 = 14\), so \(14 – 9 = 5\). The missing number is 9.

The missing part in a is 8.

a) 8, b) 9

Scoring: 1 point for each correct number.

Question 3 – Dots in rows [2 pts]

Six pairs and one leftover dot.

There are 6 pairs and 1 dot left over, so 13 is odd.
1 dot has no partner.

a) odd, b) 1

Scoring: 1 point for odd. 1 point for 1 dot.

Question 4 – Two equal groups [2 pts]

\(18 = 9 + 9\)
\(8 = 4 + 4\)

9 + 9 and 4 + 4

Scoring: 1 point for each correct sentence.

Question 5 – Sort the numbers [2 pts]

Even: 10, 18, 16 (they end in 0, 8, 6).
Odd: 5, 13, 7 (they end in 5, 3, 7).

Even: 10, 18, 16. Odd: 5, 13, 7.

Scoring: 1 point for each list with all three numbers.

Question 6 – Beads on a string [2 pts]

Start at 9 and hop 6: \(9 + 6 = 15\).

Six steps from 9 land on 15.

15 beads

Scoring: 1 point for a correct method (adding 6 to 9). 1 point for 15.

Question 7 – Cookies left [2 pts]

\(14 – 6 = 8\), because \(6 + 8 = 14\).

The missing part is 8.

8 cookies

Scoring: 1 point for a correct number sentence. 1 point for 8.

Question 8 – Marble story [2 pts]

\(7 + 7 = 14\)
\(14 – 5 = 9\)

a) 14 marbles, b) 9 marbles

Scoring: 1 point for each correct answer.

Question 9 – Share with friends [2 pts]

No. Pair up the stickers: 6 pairs and 1 sticker left over. Each friend gets 6, and 1 sticker has no partner. 13 is odd.

Mei is not right.

Scoring: 1 point for saying no. 1 point for a correct explanation (13 is odd, 1 left over).

Total score

Total

20 points

Key facts behind this fluency even odd test answers

Key facts

Doubles add a number to itself: \(8 + 8 = 16\).
Make a ten by moving dots to fill a ten frame, then add the rest.
Subtraction is a missing addend: \(15 – 8\) asks \(8 + ? = 15\).
Even numbers end in 0, 2, 4, 6, or 8. Odd numbers end in 1, 3, 5, 7, or 9.
Every even number up to 20 is a sum of two equal addends.

How to use this fluency even odd test answers

Score your test with the point values shown for each question. Then read the worked solution of every question where you lost points and note the method to review.

All Grade 2 chapters: Grade 2 math.

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