English

First guess the answer and then calculate: 69 × 52 = ?

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Question

First guess the answer and then calculate:

69 × 52 = ?

Numerical
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Solution

On guessing 69 × 52, the numbers will be near to 70 × 50 = 3500

Calculation-

  60 9
50 60 × 50 9 × 50
  3000 450
2 60 × 2 9 × 2
  120 18

By adding the numbers in third and fifth rows you will get

3000 + 450 + 120 + 18 = 3588

So, 69 × 52 = 3588.

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The Junk Seller
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Chapter 6: The Junk Seller - Exercises [Page 67]

APPEARS IN

NCERT Math - Magic [English] Class 4
Chapter 6 The Junk Seller
Exercises | Q c) | Page 67

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Kind of Junk Price of 1 Kg
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