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To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: We have the decimal .
Step 2: Moving the decimal point in one place to the right gives us .
Therefore, the solution to the problem is .
\( 20.1:10= \)
Think of it this way: multiplying makes numbers bigger, so the decimal moves toward making a larger number. Moving right increases the value: 0.25 becomes 2.5, which is definitely bigger!
Add zeros as placeholders! For example, . The zero shows the decimal moved one place right.
Absolutely! Move the decimal two places right for ×100, and three places right for ×1000. The pattern continues for any power of 10.
With powers of 10, you don't need to do traditional multiplication! Just count the zeros in the power of 10, then move the decimal that many places right. It's a shortcut!
Remember: multiplication makes bigger, division makes smaller. Since 10 × 0.25 should give a bigger number than 0.25, the decimal moves right to create 2.5.
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