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A number line runs from 3 to 4 and is divided into 10 equal parts. A point sits on the 7th mark after 3. Which decimal does the point show?

Class 6DecimalsDecimals
  • A3.07
  • B3.7
  • C7.3
  • D0.7

Step-by-Step Solution

Ten equal parts between 3 and 4 make each step 0.1. Seven steps past 3 is 3 + 0.7 = 3.7. The answer 3.07 would need the gap split into 100 parts, not 10.
Answer: B) 3.7

Key idea: Place value to the right of the decimal point

To the LEFT of the decimal point: ones, tens, hundreds — each place is **10 times** bigger than the one to its right. To the RIGHT of the decimal point, the same rule continues — each place is **10 times smaller** than the one to its left. So:

- 1st place after the point: tenths (1/10)
- 2nd place: hundredths (1/100)
- 3rd place: thousandths (1/1000)

The decimal .

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