Revision Notes for CBSE Class 7 Maths Chapter 2 - Free PDF Download
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1. Explain How to Multiply Decimal Numbers by 10,100 and 1000?
By multiplying a decimal number by 10 we will transfer the decimal point to the right by one place. Like for 100 or 1000 also.
Let's consider different examples to explain this process:
Example 1: 2.25 × 10 = 225
Example 2: 4.25 × 100 = 425
Example 3: 5.754 × 1000 = 5754
2. Explain How to Divide Decimal Numbers by 10,100 and 1000?
In case if we divide a decimal number by 10 then in that case there is a transfer of the decimal point to the left by one place, similarly for 100 or 1000.
Let's take different examples to explain this process:
Example 1: 5.25 ÷ 10 = 0.525
Example 2: 22.77 × 100 = 0.2277
Example 3: 267.33 × 1000 = 0.26733