ROOTED IN SAHARANPUR. IMAGINING A BRIGHTER INDIA. ✦ 2026 • A journey of discovery
Maths • Classes 4–5

Guess wisely, then check

An estimate can catch a strange answer.

About 12 minutes Read · try · explain
Take your time. Speak, draw or write your answers.
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01 / UNDERSTAND

Here is what is happening.

Estimation gives a useful approximate value. For 198 + 203, rounding both numbers to 200 suggests about 400. The exact sum is 401. An estimate is not a careless answer: explain your rounding and choose an accuracy that suits the question.

Pause. Make the idea your own.

Explain one idea to a partner, draw it or write it in your own words. Which part is an observation, an example or a question?

You can use a home language. No need to share personal experiences or finish everything in one sitting.
02 / MAKE IT YOUR OWN

Your little investigation

What you need

Paper and a pencil, or a partner to talk with. Drawing and speaking are welcome.

  1. Estimate 198 + 203 before adding exactly.

  2. Compare 401 and 4,001 as possible answers. Which fits the estimate?

  3. Invent another sum close to 400 and test your partner’s estimate.

03 / CHECK YOUR UNDERSTANDING

Which is a useful estimate of 198 + 203?

Choose one answer
KEEP ASKING

Another question is waiting.

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