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When multiplying large numbers, if one of those numbers is even, subdividing those numbers will help one solve the problem quickly. For instance, consider 20 x 120 (divide the 20 by 2 and double the 120) = 10 x 240 = 2400 The answer to 20 x 120 is 2,400.

```
6 years ago

Sourabh Singh
IIT Patna
2104 Points
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4 years ago
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### Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions