Page 54 - CT&AI_CLasa_7_Part_1

Finding the

7 Unknown

computational thinking quest

Tick ( ) the correct option.

1. A pattern follows: 5. A weighing scale shows:
3, 5, 7, 9, … 3 identical bags = 2 identical boxes + 12 kg
If the nth term is 2n + 1, which step gives 101? if 1 box = 6 kg, what is the weight of one bag?
(Pattern Recognition) (Logical Thinking)

(a) 49 (b) 50 (a) 6 kg (b) 8 kg

(c) 51 (d) 52 (c) 10 kg (d) 12 kg

2. A number after these steps gives 20: 6. A two-digit number has digits x and y.
Number = 10x + y
• Multiply by 4 • Subtract 8
Original number is: (Logical Thinking) If:
• digits differ by 3
(a) 6 (b) 7 • number = 4 × sum of digits
Then the number is (Pattern Recognition)
(c) 8 (d) 9

3. After 12 years, Sunita shall be three times as (a) 14 (b) 25
old as she was 4 years ago. Her present age is (c) 36 (d) 47
. (Data Analysis)
7. If three identical bags and two identical boxes
(a) 8 years (b) 12 years balance perfectly.
• One bag and one box together weigh 10 kg.
(c) 16 years (d) 18 years
• One box weighs 4 kg.
4. If the angles of a triangle is x, x + 10 and Which of the following equations and weights
2x – 10, what are the measures of each angle correctly represent the situations?
of the triangle? (Decomposition)
(Analytical Thinking)
(a) 45°, 55°, 80° (a) x + y = 10, one bag weighs 10 kg

(b) 65°, 55°, 60° (b) y = 10 – x, one bag weighs 6 kg

(c) 45°, 65°, 70° (c) 3y = 2x + 10, one bag weighs 8 kg

(d) 45°, 45°, 90° (d) x – y, one bag weighs 4 kg

52 Computational Thinking-7 (Mathematics)