Free Year 7 Probability scale 0-1 Practice | Skillo
Year 7 students facing their third NAPLAN need to be confident with probability scale 0-1. Recognise that probabilities lie on numerical scales of 0-1 or 0%-100% and use estimation to assign probabilities. Skillo has targeted practice questions for this exact skill, mapped to the Australian Curriculum v9.0, free and ready to go.
Start Free Practice →What is tested: Probability scale 0-1
- ✓Recognise that probabilities lie on numerical scales of 0-1 or 0%-100% and use estimation to assign probabilities.
- ✓Questions may include word problems set in real Australian contexts
- ✓Both calculator and non-calculator question types are covered
Sample questions
Question 1 — Easy
Two birdwatching groups recorded the number of native birds spotted each day for five days. Group 1: 4, 6, 6, 8, 6 Group 2: 3, 5, 7, 9, 11 Which statement correctly describes the distribution of Group 2 compared to Group 1?
Answer: Group 1's range is 8 − 4 = 4. Group 2's range is 11 − 3 = 8, so Group 2 is more spread out. In Group 2, every value is different, so there is no mode. Group 1's mode is 6 (appears three times). Option A incorrectly states Group 2 has a mode of 7. Option C incorrectly claims Group 1 is more spread out. Option D is wrong because the ranges differ.
Question 2 — Medium
A bag contains 5 red marbles, 4 blue marbles, and 3 green marbles. Mia picks one marble at random without looking. What is the probability that she picks a marble that is NOT red, expressed as a fraction in simplest form?
Answer: Total marbles = 12. Not-red marbles = 4 + 3 = 7. Probability = 7/12, which is already in simplest form.
Question 3 — Hard
In a Year 7 science experiment, students measured the growth of seedlings (in cm) over 2 weeks: 4.2, 5.8, 3.9, 6.1, 4.7, 5.3, 4.0. What is the median growth measurement?
Answer: Ordered values: 3.9, 4.0, 4.2, 4.7, 5.3, 5.8, 6.1. The median (middle value of 7) is the 4th value = 4.7 cm.
How to use Skillo for Year 7 Numeracy
- Select Year 7 and Numeracy on the home screen
- Use Quick Practice — questions on probability scale 0-1 will appear as part of the session
- Check the Skill Breakdown on your profile to track your accuracy on probability scale 0-1 specifically
- Review explanations after each question to understand the reasoning behind correct answers
Skillo is free, requires no email or account details, and is built specifically for Australian students. Every question is mapped to the Australian Curriculum v9.0 and filtered by skill so your child practises exactly what they need.
No account needed. No email. No credit card.