Scaled Graphs and Line Plots: Grade 3 Math Test Answer Key – PDF Download

Grade 3 Graphs Test Answer Key: questions 1–5

Question 1: Pumpkin sales (3 points)

1. Tuesday has 7 circles: \(7 \times 5 = 35\). 35 pumpkins.
2. Wednesday has 3 circles, 15 pumpkins. \(35 – 15 = 20\). 20 more pumpkins.
3. \(20 + 35 + 15 + 25 = 95\). 95 pumpkins.

Scoring: 1 point for each correct part.

Question 2: Favorite subjects (3 points)

1. The Science bar stops on the line labeled 20. 20 students.
2. PE is 40 and Reading is 25. \(40 – 25 = 15\). 15 more students.
3. \(15 + 35 + 25 + 20 + 40 = 135\). 135 students.

Scoring: 1 point for each correct part.

Question 3: Two lengths (2 points)

1. The ribbon ends 1 fourth after the 2 mark: \(2\frac{1}{4}\) inches.
2. The stick ends at the half mark after 5: \(5\frac{1}{2}\) inches.

Scoring: 1 point for each correct length with units. Accept 2 1/4 and 5 1/2 written as improper fractions.

Question 4: Make a line plot (2 points)

Count each length: \(3\frac{1}{4}\) has 1, \(3\frac{1}{2}\) has 3, \(3\frac{3}{4}\) has 2, 4 has 1, and \(4\frac{1}{4}\) has 1. That makes 8 Xs.

Scoring: 1 point for a number line marked correctly in fourths with a label, 1 point for all 8 Xs in the right places.

Question 5: Plant heights (3 points)

1. There are 3 Xs above \(2\frac{3}{4}\). 3 plants.
2. Above \(3\frac{1}{4}\) there is 1 X and above \(3\frac{1}{2}\) there is 1 X: \(1 + 1 = 2\). 2 plants.
3. The tallest stack is above \(2\frac{3}{4}\). \(2\frac{3}{4}\) inches.

Scoring: 1 point for each correct part.

Grade 3 Graphs Test Answer Key: questions 6–8

Question 6: Sticker circles (2 points)

Sofia: \(3 \times 8 = 24\) and half of 8 is 4, so \(24 + 4 = 28\). Liam: \(5 \times 8 = 40\). \(40 – 28 = 12\). Liam has 12 more stickers.

Scoring: 1 point for finding Sofia’s 28 stickers, 1 point for the difference 12.

Question 7: Pet counts (2 points)

1. \(15 + 25 + 10 = 50\). 50 pets.
2. \(25 – 10 = 15\). 15 fewer birds.

Scoring: 1 point for each correct part.

Question 8: Graph squares (3 points)

1. \(9 \times 5 = 45\). 45 votes.
2. \(30 : 5 = 6\). 6 squares.
3. Tacos: \(7 \times 5 = 35\). \(45 – 35 = 10\). 10 more votes.

Scoring: 1 point for each correct part.

Scoring summary

How to use this grade 3 graphs test answer key

Use this grade 3 graphs test answer key to score the test fairly and to see which skills need more practice.

⬇ Download the Grade 3 Scaled Graphs and Line Plots test answer key (PDF, 88 KB)

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