You're offline — cached pages and worlds still work
Drishti Innovations logo
Drishti Innovations

Word Problems

Comprehensive notes, formulas, and practice questions for Word Problems.

Word Problems

Subtraction Word Problems

NCERT anchor

Joyful Mathematics 2Rani's Gift. One- and two-step take-away stories in Rani's Gift use the same keywords as these word problems.

What you'll learn

  • To pick subtraction when a problem asks "how many left?" or "how many more?"
  • To write a number sentence from a story.
  • To solve one-step and two-step stories up to 100.

Key concepts

Verbal: Circle words like left, gave away, sold, remain — they usually mean subtract.

Symbolic: Story → number sentence: "52 shells, gave 18" → 52 − 18 = ?

Level 1 — Key words for "take away"

left, remain, gave away, sold, ate, flew away → usually subtraction.

Level 1 — "How many more?" trick

Ali has 45, Ben has 32. How many more does Ali have? → 45 − 32 = 13 (compare by subtracting smaller from larger).

Level 1 — Draw a bar model

[Total 50] − [Sold 18] = [Left ?]

Level 2 — Two-step (intro)

Had 60, gave 15, then gave 10 more → 60 − 15 − 10 = 35.

Level 2 — Indian stories

Cricket cards, rangoli diyas, school lunch tiffins.

Worked example

Priya collected 52 shells at Marina Beach. She gave 18 to her brother. How many does she have now?

Step 1 — Total shells: 52
Step 2 — Gave away: 18 (subtraction)
Step 3 — 52 − 18 = 34
Answer: 34 shells

Common mistakes

MistakeWhyFix
Adding when story says "gave away"Keyword missGave away → subtract
45 − 32 for "total of both"Wrong questionRead what is asked
No units in answerRushingWrite 34 shells

Quick check

  • Ravi had 70 rupees, spent 25. How much left?
  • Class 2A has 40 students, 2A has 35. How many more in 2A?
  • Mum bought 90 eggs, used 45 for baking. Eggs left?

Stretch: Had 60 rupees, spent ₹15 on snacks, then ₹10 on stickers. How much is left? (Two steps.)

Revision tip: Draw a simple bar: total bar minus part sold equals part left — then write the subtraction sentence.

Open the Practice tab for graded questions on Subtraction Word Problems.

Interactive Exploration Suggestions (Drishti Live Worlds)

  • Use the platform-native live simulation or PhET-style tool for this topic (number line, Venn, physics playground, molecule builder, sensor dashboard, etc.).
  • Mirror / body / home activity: physically do the concept (count objects, measure, role-play) and photograph or describe for portfolio.
  • Voice or text reflection with AI Mentor: explain the concept to a younger student or family member.

AI Mentor Prompts (Socratic, Board-Adaptive)

  • "Explain this concept to a Class 6 student using one real example from an Indian home, school, market, or festival."
  • "What is one common mistake students make here, and how would you catch yourself making it?"
  • Stretch: "How does this connect to coding, robotics, money, health, environment, or a future career?"

Gamification, Portfolio & Parent Visibility

  • Complete the core practice + one extension activity (photo, table, short reflection, or mini-project) for base XP + topic badge.
  • 5-7 day streak or family discussion note = multiplier + visible artifact in parent/principal dashboard.
  • Best real-world application stories (anonymised) featured on class or national leaderboard.

Robotics, STEM & Future Skills Bridges

  • One hands-on project or measurement using the Drishti kit or household items that makes the concept physical.
  • Direct link to at least one Future Skill track (Money Management, Green Tech, Cyber Defenders, Micro-Entrepreneurship, AI Mastery, Sustainable Living, Personality Development).
  • Coding extension where relevant (simple script, simulation, or data logging).

NEP 2020 & Full Education OS Alignment

This material emphasises experiential "learning by doing", competency (apply/create/analyse), vocational exposure, critical thinking, and multidisciplinary connections. Designed to feed live worlds, AI Mentor (with memory), gamification, robotics, parent analytics, and future skills — not just exam prep.

Portfolio Evidence Idea: Your photo/table/reflection/project + one sentence on "How this helps me in real life or a possible future path."

Open the Practice tab for aligned questions (easy/medium/hard + case-based) with full AI scaffolding.

See curriculum for cross-links and the full future-skills/robotics chapters.

Key Takeaways (TL;DR)

  • NCERT anchor
  • What you'll learn
  • Key concepts
  • Worked example

Master this topic with Drishti OS

Get unlimited mock tests, AI-powered mentorship, and complete video courses when you join.

Start Free Practice