1) The spinner has 8 sections. The numbers 1 and 3 appear 2 times each. So, there are 2 + 2 = 4 sections with 1 or 3. The probability is 4/8 = 1/2.
2) The spinner has 8 sections. The number 3 appears 2 times. So, there are 8 - 2 = 6 sections that are not 3. The probability is 6/8 = 3/4.
3) The spinner has 8 sections. The number 2 appears 2 times. So, there are 8 - 2 = 6 sections that are not 2. The probability is 6/8 = 3/4.
4) The spinner has 8 sections. The number 1 appears 2 times. The probability is 2/8 = 1/4.
5) The spinner has 8 sections. The number 3 appears 2 times. The probability is 2/8 = 1/4.
6) The spinner has 8 sections. The number 4 appears 2 times. The probability is 2/8 = 1/4.
7) The spinner has 8 sections. The numbers 3 and 4 appear 2 times each, so 2 + 2 = 4 sections. So, there are 8 - 4 = 4 sections that are not 3 or 4. The probability is 4/8 = 1/2.
8) The spinner has 5 sections. B appears 1 time and C appears 2 times. Since 1 ≠ 2, the chances are not equal.
9) The spinner has 5 sections. B appears 1 time and E appears 2 times, so B or E appears 1 + 2 = 3 times. So, there are 5 - 3 = 2 sections that are not B or E. The probability is 2/5.
10) The spinner has 5 sections. A appears 1 time and C appears 2 times, so A or C appears 1 + 2 = 3 times. Since 1 ≠ 2, the chances are not equal.
11) The spinner has 5 sections. A appears 1 time and B appears 1 time, so A or B appears 1 + 1 = 2 times. The probability is 2/5.
12) The spinner has 5 sections. B appears 1 time and C appears 2 times, so B or C appears 1 + 2 = 3 times. So, there are 5 - 3 = 2 sections that are not B or C. The probability is 2/5.
13) The spinner has 5 sections. A appears 1 time and E appears 2 times. Since 1 ≠ 2, the chances are not equal.
14) The spinner has 5 sections. E appears 2 times. So, there are 5 - 2 = 3 sections that are not E. The probability is 3/5.
Parent Tip: Review the logic above to help your child master the concept of 4th grade probability worksheet.
