MathIQO worksheet
Interpret data presented in circle graphs · Grade 7 · D1.3
Name: ______________________
Date: ______________________
- 1
A circle graph shows how 40 people voted. The "red" sector is 60% of the graph. How many people does it represent?
Warm-upAnswer:
- 2
A circle graph shows how 60 people voted. The "green" sector is 60% of the graph. How many people does it represent?
Warm-upAnswer:
- 3
A circle graph shows how 100 people voted. The "blue" sector is 60% of the graph. How many people does it represent?
Warm-upAnswer:
- 4
In a circle graph of 60 people, 24 of them chose "red". What percent of the graph is that? (Enter the number only.)
On levelAnswer:
- 5
In a circle graph of 40 people, 10 of them chose "yellow". What percent of the graph is that? (Enter the number only.)
On levelAnswer:
- 6
In a circle graph of 40 people, 6 of them chose "red". What percent of the graph is that? (Enter the number only.)
On levelAnswer:
- 7
In a circle graph of 100 people, the "blue" sector is 15% and the "red" sector is 55%. The rest chose "orange". How many people chose "orange"?
ChallengeAnswer:
- 8
In a circle graph of 60 people, the "red" sector is 30% and the "yellow" sector is 25%. The rest chose "green". How many people chose "green"?
ChallengeAnswer:
- 9
In a circle graph of 80 people, the "orange" sector is 15% and the "yellow" sector is 20%. The rest chose "blue". How many people chose "blue"?
ChallengeAnswer:
✅ Done? See how you did — check in at mathiqo.com/check-in
Worksheet code: eyJzIjoiZGF0YS1jaXJjbGUtZ3JhcGgiLCJkIjpbMTEzNTcwODU3Niw0NDU0MDM2ODIsMTY1MDYzMDI2MSwxMDI2Mzc2MDc1LDg1NDMwMDEyMiwxOTExMDg1ODE5LDIwNzQ1MjA2MiwyMjY5ODQ5MjgsMTM0Nzc5MTI2Nl0sInYiOjF9.c93e3a2fe3c4
A quick 5-question check-in grades itself instantly and shows what to practise next.
Answer key · Interpret data presented in circle graphs
- 1.24 — 60% of 40 = 40 × 60 ÷ 100 = 24.
- 2.36 — 60% of 60 = 60 × 60 ÷ 100 = 36.
- 3.60 — 60% of 100 = 100 × 60 ÷ 100 = 60.
- 4.40 — 24 out of 60 = 24 ÷ 60 × 100 = 40%.
- 5.25 — 10 out of 40 = 10 ÷ 40 × 100 = 25%.
- 6.15 — 6 out of 40 = 6 ÷ 40 × 100 = 15%.
- 7.30 — The rest is 30% of 100 = 30 people.
- 8.27 — The rest is 45% of 60 = 27 people.
- 9.52 — The rest is 65% of 80 = 52 people.