Let's analyze the tally chart for the birthdays of people in the class to answer the questions.
a. Which month has the most birthdays?
The tally chart shows the following:
January: |||| (4 birthdays)
February: || (2 birthdays)
March: |||| (4 birthdays)
April: ||| (3 birthdays)
May: || (2 birthdays)
June: | (1 birthday)
July: | (1 birthday)
August: ||| (3 birthdays)
September: | (1 birthday)
October: ||| (3 birthdays)
November: ||| (3 birthdays)
December: || (2 birthdays)
Looking at the values, January and March both have 4 birthdays, which is the highest on this tally chart.
b. How many children have their birthdays in February?
According to the tally chart, February has || which represents 2 birthdays .
c. How many more children have their birthdays in March than in April?
In March, there are |||| = 4 birthdays and in April, there are ||| = 3 birthdays .
March has 4 - 3 = 1 more birthday than April.
d. In which months do 3 children have their birthdays?
The months that have ||| (3 birthdays) are:
April
August
October
November
So, there are 3 children with birthdays in April, August, October, and November .