Math with Charts and Graphs
This page demonstrates how chart-based questions can be integrated into math worksheets.
Problem 1: Mean and Median
The bar chart shows test scores for different subjects. Calculate the mean and median of the scores.
- A.Mean: 81.6, Median: 85
- B.Mean: 80.5, Median: 82
- C.Mean: 81.6, Median: 78
- D.Mean: 80.5, Median: 85
Working:
Mean:
Sum of scores: 85 + 78 + 92 + 65 + 88 = 408
Number of subjects: 5
Mean = 408 ÷ 5 = 81.6
Median:
Arrange scores: 65, 78, 85, 88, 92
Middle value (3rd value): 85
Problem 2: Percentage Calculations
The pie chart shows how a family allocates their monthly budget of $3,000. How much money is allocated to Housing and Food combined?
- A.$1,500
- B.$1,800
- C.$1,600
- D.$2,100
Working:
Housing percentage: 35%
Food percentage: 25%
Combined percentage: 35% + 25% = 60%
Amount: 60% of $3,000 = 0.6 × $3,000 = $1,800
Problem 3: Growth Rate
The line graph shows the growth (in cm) of two plants over six weeks. Calculate the average weekly growth rate for Plant B.
- A.15 cm/week
- B.18 cm/week
- C.12 cm/week
- D.20 cm/week
Working:
Initial height: 0 cm
Final height: 90 cm
Total growth: 90 - 0 = 90 cm
Time period: 6 weeks
Average growth rate: 90 cm ÷ 6 weeks = 15 cm/week