SMC Primary 4 — Drill 3: counting without losing count

6 questions · 12 marks · about 12 minutes

Session …

Nothing is taken off for a wrong answer, so never leave one blank — a guess can only help. Work it out on paper first, then tap your choice.

Question 1 A1 · 2 marks

How many rectangles are there in the figure below?

┌───┬───┬───┐
│   │   │   │
└───┴───┴───┘
Question 2 A2 · 2 marks

How many rectangles are there in the figure below?

┌───┬───┐
│   │   │
├───┼───┤
│   │   │
└───┴───┘
Question 3 A3 · 2 marks

How many ways are there from A to B, moving only up or right along the lines?

      ┌───┬───┐ B
      │   │   │
      ├───┼───┤
      │   │   │
    A └───┴───┘
Question 4 A4 · 2 marks

How many ways are there from A to B, moving only up or right along the lines?

      ┌───┬───┐ B
      │   │   │
      ├───┼───┤
      │   │
    A └───┘
Question 5 A5 · 2 marks

How many squares are there in the figure below?

┌───┬───┬───┐
│   │   │   │
├───┼───┼───┤
│   │   │   │
├───┼───┼───┤
│   │   │   │
└───┴───┴───┘
Question 6 A6 · 2 marks

In the same 3-by-3 figure as the question above, how many rectangles are there that are NOT squares?

┌───┬───┬───┐
│   │   │   │
├───┼───┼───┤
│   │   │   │
├───┼───┼───┤
│   │   │   │
└───┴───┴───┘