This Grade 4 worksheet deepens compound event practice with coin sample spaces, four-sector spinners, and prediction questions. Grade 4 students count outcomes for at-least-one-head events, find experimental probability from observed data, and multiply trials by chance fractions to predict results. Matching pairs probability terms to clear definitions. Each item helps Grade 4 learners apply theoretical and experimental probability ideas confidently across many real and classroom-style problems daily.
Style:
Probability and Data
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Flipping two coins, the chance of two tails is 1 in 4.
2. A 4-equal-sector spinner gives any one color a 1 in 4 chance.
3. If 8 of 32 trials hit blue, experimental probability is 8 out of 32.
4. Predict heads in 50 coin flips: about 25 heads.
5. Two coins, chance of at least one head is 3 out of 4.
6. Spinner with 4 equal sectors red, red, blue, green: red chance is 2 out of 4.
7. In 20 rolls of a die, a six appeared 4 times; experimental chance is 4 out of 20.
8. If chance of green is 1 in 4, in 24 spins expect about 6 greens.
9. Two coins flipped 80 times, expect about 20 flips of two tails.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Sample space of two coins
→ Four outcomes HH HT TH TT
Four outcomes HH HT TH TT
Equal-sector spinner
→ Each sector equally likely
Each sector equally likely
Theoretical probability
→ Counted from possible outcomes
Counted from possible outcomes
Data-based prediction
→ Trials times probability fraction
Trials times probability fraction
Probability and Data
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) Flipping two coins, the chance of two tails is 1 in 4.
2) A 4-equal-sector spinner gives any one color a 1 in 4 chance.
3) If 8 of 32 trials hit blue, experimental probability is 8 out of 32.
4) Predict heads in 50 coin flips: about 25 heads.
5) Two coins, chance of at least one head is 3 out of 4.
6) Spinner with 4 equal sectors red, red, blue, green: red chance is 2 out of 4.
7) In 20 rolls of a die, a six appeared 4 times; experimental chance is 4 out of 20.
8) If chance of green is 1 in 4, in 24 spins expect about 6 greens.
9) Two coins flipped 80 times, expect about 20 flips of two tails.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Sample space of two coins
→ Four outcomes HH HT TH TT
Four outcomes HH HT TH TT
Equal-sector spinner
→ Each sector equally likely
Each sector equally likely
Theoretical probability
→ Counted from possible outcomes
Counted from possible outcomes
Data-based prediction
→ Trials times probability fraction
Trials times probability fraction
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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