Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 49 - CT&AI_CLasa_7_Part_1
P. 49

    7.  A tank is 0.8 full. After 12.5 litres are removed,     9.  In a path of numbers, you start at 0.12. Each
                         the tank is 0.3 full. What is the total capacity    subsequent numbers is the previous numbers
                         of the tank in litres?      (Data Analysis)         multiplied by 1.5. What is the value of the 4th
                                                                             numbers in this sequence? (Pattern Recognition)
                                (a)  25
                                                                                    (a)  0.18
                                (b)  50
                                                                                    (b)  0.27
                                (c)  12.5
                                                                                    (c)  0.405
                                (d)  37.5
                                                                                    (d)  0.6075
     computational thinking quest    8.  A rule for finding the approximate length of

                         diagonal of a square is to multiply the length    10.  A  computer  program takes  a number,
     Tick ( ) the correct option.  of a side of the square by 1.414. The length of   multiplies  it  by  0.5,  then  divides  the  result
                         the diagonal when the length of a side of the       by 0.2. If the final output is 25, what was the
                         square is 8.3 cm, will be                           starting number?       (Algorithmic Thinking)
                                                (Algorithmic Thinking)
                                                                                    (a)  6.25
                                (a)  less than 11 cm
                                                                                    (b)  10
                                (b)  equal to 11 cm

                                                                                    (c)  2.5
                                (c)  greater than 11.5 cm

                                (d)  Can’t be determined                            (d)  100

                                       The initial sequence is: 0.0  0.0  0.0  0.0  0.0  0.0  0.0
                                       You start with the number 0.0.

                                       Each time you press a button, it adds 0.2 to the next numbers only (except the current).
                                       Your goal is to make all numbers equal to 1.0 in this sequence:
                                       What is the minimum number of button presses needed?

                                             (a)  2                                 (b)  3

                                             (c)  4                                 (d)  5

                                                                                     Another Peek Beyond the Point    47

| 44 45 46 47 48 49 50 51 52 53 54 |