Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 54 - CT&AI_CLasa_7_Part_1
P. 54

    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)

| 49 50 51 52 53 54 55 56 57 58 59 |