g
Gyaan Maths
CBSE · Class 6-12
Back to chapter
CBSE Maths · Class 8

Chapter 7: Proportional Reasoning-1

Name: ________________________
Date: ______________
Marks: ____ / 5

Ratio, proportion, unitary method, and direct variation.

Questions

  1. Simplify 18:2718:27.
  2. a:b=3:4a:b=3:4; if a=15a=15, find bb.
  3. In proportion 2:3=x:92:3=x:9, xx?
  4. 12 kg rice ₹720; 5 kg cost?
  5. 20% of 250.

Extra Practice (Optional)

  • [object Object]
  • [object Object]
  • [object Object]
  • [object Object]

Answer Key (For Teachers)

  1. Answer: 2:32:3
    Working: HCF 9.
  2. Answer: 2020
    Working: Scale.
  3. Answer: 66
    Working: Cross-multiply.
  4. Answer: ₹300300
    Working: Rate 60.
  5. Answer: 5050
    Working: 0.2⋅2500.2\cdot 250.
Gyaan Maths · CBSE Class 8 · Chapter 7
Gyaan Maths — CBSE Class 6-12, built for board-toppers.
v1.1 · Sept 2026