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A small 1 written above the tens column is there to remember one extra:

ABracelet
BContainer
CWristband
DNecklace
Answer & Solution
Correct answer: D. Necklace
1. Ten loose beads were tied together. 2. That new group must not be forgotten. 3. So the small 1 stands for one extra necklace. _Source: syllabus Mathematics Class II, Chapter 12, Give and Take._
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