Question 46 of 54intermediate🔧 ApplyShort Answer3 marks

Make your own ten dots card and hide a few dots from your friends. Ask them how many dots are hidden. How many dots are hidden and how many dots are visible?

Correct Answer

Activity: Create a ten dots card and hide some dots for friends to guess.

Example: Total dots = 10 Visible dots = 7 Hidden dots = 10 - 7 = 3

Pattern:

  • 0 hidden → 10 visible
  • 1 hidden → 9 visible
  • 2 hidden → 8 visible
  • And so on...

Key Rule: Hidden dots + Visible dots = 10 (always)

Formulas:

  • Total - Visible = Hidden
  • Total - Hidden = Visible

Relationship: If 3 + 7 = 10, then 10 - 3 = 7 and 10 - 7 = 3.

Exercise: Let us Do | Q: 51 | (Page Page 15)
For More Understanding

Explanation

The chapter uses this activity to teach subtraction through a game. Children learn that Total - Visible = Hidden, or Total - Hidden = Visible. This reinforces the relationship between addition and subtraction: if 3 + 7 = 10, then 10 - 3 = 7 and 10 - 7 = 3.

Solution Steps

  1. Create a card with 10 dots.

  2. Hide some dots from view.

  3. Count the visible dots.

  4. Calculate hidden dots: Total - Visible = Hidden

  5. Verify: Hidden + Visible = 10

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