Grade 3 bar graph difference problems: online quiz

📚 Quick Study Guide

• 📊 Reading Bar Graphs: Understand that each bar represents a quantity and the height of the bar corresponds to its value on the graph's scale.
• ➕ Finding the Difference: To find the difference between two bars, subtract the smaller value from the larger value. Difference = Larger Value - Smaller Value
• ✍️ Units: Always remember to include the units (e.g., apples, students, inches) when stating your answer.
• 💡 Tips: Double-check the scale of the graph! It might not always start at zero.
• ✏️ Keywords: Look for keywords in the question like 'more than', 'less than', 'difference', or 'how many more'. These help you decide whether to add, subtract, multiply or divide!
• 🧐 Estimation: Before calculating, estimate the answer by visually comparing the bars. This helps you check if your calculated answer is reasonable.

Practice Quiz

1. What is the difference between the number of apples and oranges shown in the bar graph below, where apples = 12 and oranges = 7?
   1. 3
   2. 4
   3. 5
   4. 6
2. A bar graph shows that 15 students like soccer and 8 students like basketball. How many more students like soccer than basketball?
   1. 6
   2. 7
   3. 8
   4. 9
3. The bar graph represents the number of sunny and rainy days in a week. If there were 5 sunny days and 2 rainy days, what is the difference?
   1. 1
   2. 2
   3. 3
   4. 4
4. A bar graph shows that a plant grew 9 cm in week 1 and 4 cm in week 2. How much more did it grow in week 1 than in week 2?
   1. 3 cm
   2. 4 cm
   3. 5 cm
   4. 6 cm
5. If a bar graph illustrates that 11 birds are blue and 6 birds are red, what is the difference in the number of blue and red birds?
   1. 3
   2. 4
   3. 5
   4. 6
6. A bar graph displays 14 cookies sold on Monday and 9 cookies sold on Tuesday. What is the difference in the number of cookies sold on those two days?
   1. 3
   2. 4
   3. 5
   4. 6
7. The bar graph shows that John has 16 toy cars and Mary has 7 toy cars. How many more toy cars does John have than Mary?
   1. 7
   2. 8
   3. 9
   4. 10