This grade 2 data worksheet answer key solves all 24 problems of the picture graphs, bar graphs and line plots worksheet step by step.
This answer key shows each step for the 24 graph problems. Point to the graph while you check an answer. Look at the key and scale first, count carefully, and write the unit when the problem asks for a length. Redrawn graphs show what the finished work looks like.
Grade 2 Data Worksheet Answer Key: problems 1–5
Problem 1: Read the ruler
The crayon starts at 0. It ends at the 4 inch mark.
The crayon is 4 inches long.
Problem 2: Measure the pencil
The end of the pencil lines up with the 6.
The pencil is 6 inches long.
Problem 3: Make a line plot
Count each length: 3 in: 1 leaf, 4 in: 2 leaves, 5 in: 3 leaves, 6 in: 2 leaves, 7 in: 0 leaves. Check: \(1 + 2 + 3 + 2 = 8\) leaves.
There are 8 X marks, one for each leaf.
Problem 4: Count on the line plot
- There are 3 X marks above 4. 3 crayons.
- Shorter than 4 inches means 2 inches or 3 inches: \(1 + 3 = 4\). 4 crayons.
Problem 5: How many objects
Count the X marks above each number. The numbers 5, 6, 7, 8, and 9 have 1, 2, 3, 2, and 1 X marks.
Add: \(1 + 2 = 3\), \(3 + 3 = 6\), \(6 + 2 = 8\), \(8 + 1 = 9\).
Priya measured 9 sticks.
Grade 2 Data Worksheet Answer Key: problems 6–10
Problem 6: Longest and shortest
The shortest stick has an X at 5 inches. The longest stick has an X at 9 inches. Subtract: \(9 – 5 = 4\).
The longest is 9 inches, the shortest is 5 inches, and the longest is 4 inches longer.
Problem 7: Read a picture graph
Count the circles in the Grape row: 5. The Apple row has 6 circles, which is the most.
5 students chose grapes. Apple was chosen the most.
Problem 8: Put together on a picture graph
Apples: 6. Bananas: 4. Put together: \(6 + 4 = 10\).
10 students chose apples or bananas.
Problem 9: Compare on a picture graph
Apples: 6. Oranges: 3. Subtract: \(6 – 3 = 3\).
3 more students chose apples.
Problem 10: Make a picture graph
Draw 7 circles in the Soccer row, 5 in Tag, 4 in Kickball, and 2 in Swimming.
Check: \(7 + 5 + 4 + 2 = 18\) students in all.
The graph has 18 circles.
Grade 2 Data Worksheet Answer Key: problems 11–15
Problem 11: Read a bar graph
The tallest bar is Dog, with 7. The shortest bar is Bird, with 2.
The most popular pet is dog. The least popular is bird.
Problem 12: Put together on a bar graph
Cats: 5. Fish: 3. Add: \(5 + 3 = 8\).
There are 8 cats and fish in all.
Problem 13: Compare on a bar graph
Dogs: 7. Birds: 2. Subtract: \(7 – 2 = 5\).
There are 5 fewer birds than dogs.
Problem 14: Make a bar graph
Draw each bar up to its number: Apples to 5, Pretzels to 6, Popcorn to 8, and Cheese to 3.
Popcorn has the tallest bar.
Problem 15: All the pets
Add all four bars: \(7 + 5 + 3 + 2\). First \(7 + 5 = 12\). Then \(12 + 3 = 15\). Then \(15 + 2 = 17\).
There are 17 pets in all.
Grade 2 Data Worksheet Answer Key: problems 16–20
Problem 16: Compare two lengths
Subtract the shorter length from the longer length: \(9 – 6 = 3\). Check: \(6 + 3 = 9\).
The marker is 3 inches longer.
Problem 17: Take apart
There are 4 X marks above 5. All ribbons: 10. Take apart: \(10 – 4 = 6\).
6 ribbons are not 5 inches long.
Problem 18: Order from most to least
Count each row: Soccer 7, Tag 5, Kickball 4, Swimming 2. Put the numbers in order: 7, 5, 4, 2.
Soccer, Tag, Kickball, Swimming.
Problem 19: Two groups
Soccer and tag: \(7 + 5 = 12\). Kickball and swimming: \(4 + 2 = 6\). Compare: \(12 – 6 = 6\).
6 more students chose soccer and tag.
Problem 20: Favorite colors
Add: \(4 + 6 = 10\), \(10 + 3 = 13\), \(13 + 5 = 18\). Compare blue and green: \(6 – 3 = 3\).
18 students voted, and 3 fewer voted for green than for blue.
Grade 2 Data Worksheet Answer Key: problems 21–24
Problem 21: Leaves longer than 4
Longer than 4 inches means 5 inches or 6 inches. There are 3 X marks at 5 and 1 X at 6. Add: \(3 + 1 = 4\).
4 leaves are longer than 4 inches.
Problem 22: Will cheese win
Cheese has 3 votes now. Add 4 more: \(3 + 4 = 7\). Popcorn has 8. Since \(7 < 8\), cheese still has fewer votes.
No. Cheese would have 7 votes and popcorn has 8, so popcorn is still ahead by 1.
Problem 23: School lunch
(a) Add the rows: \(9 + 6 = 15\), \(15 + 3 = 18\), \(18 + 5 = 23\). (b) Take apart: \(23 – 9 = 14\).
(a) 23 students. (b) 14 students.
Problem 24: Measuring sticks
(a) There are 3 X marks above 6. (b) The last X is above 8. (c) Longer than 6 means 7 or 8: \(2 + 2 = 4\).
(a) 3 sticks. (b) 8 inches. (c) 4 sticks.
How to use this grade 2 data worksheet answer key
Read this grade 2 data worksheet answer key after trying each problem yourself, and redo any problem you missed.
Printable PDF · Worksheet Answer Key
Grade 2 Picture Graphs, Bar Graphs and Line Plots worksheet answer key
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