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Page 18 - CT&AI_CLasa_7_Part_1
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    arithmetic

                                     2                                           expressions

                                               computational thinking quest

                    Tick ( ) the correct option.

                      1.  A machine follows this rule:                    5.  Which pair has equal values?
                         If number is even → divide by 2                                             (Analytical Thinking)

                         If number is odd → multiply by 3 and add 1                 (a)  34 − (9 + 12) and 34 − 9 + 12
                         Starting  from 7,  what is  the result after 3
                         steps?                 (Algorithmic Thinking)              (c)  16 − (8 − 3) and (16 − 8) − 3

                               (a)  34              (b)  11                         (c)  27 − (18 + 4) and 27 − 18 + 4
                                                                                    (d)  34 − (9 – 12) and 34 − 9 + 12
                               (c)  52              (d)  26
                                                                          6.  A shopkeeper  packs  4 boxes  with 12 items
                      2.  If A = 1, B = 3, C = 6, D = 10, E = 15, then what is   each. Then remove 10 items. Later, he doubles
                         H?                     (Pattern Recognition)        the  remaining  items.  How many  items  are
                                                                             there finally?         (Algorithmic Thinking)
                               (a)  28              (b)  36
                                                                                    (a)  76             (b)  80
                               (c)  45              (d)  55
                                                                                    (c)  72             (d)  84
                      3.  In the expression, 9 @ 6 + 12 < 5 × 3 × 2
                                                                          7.  In the following expression, each operator is
                         Which operator cannot replace ‘@’ so that the       interchanged with the adjacent term on its left,
                         condition remains true?    (Logical Thinking)       resulting in a new expression. Find the value
                                                                             of: (New Expression − Original Expression)
                               (a)  +               (b)  –                   Left 277 + 196 – 329 right  (Algorithmic Thinking)

                               (c)  ×               (d)  ÷                          (a)  156            (b)  266
                      4.  Which expression is equal to 28 + 35 – 10?                (c)  196            (d)  217

                               (a)  26 + (28 – 1)                         8.  A gift shop packs 8 keychains, 6 badges, and 4
                                                                             stickers in one souvenir pack. If 750 packs are
                               (b)  (28 + 30) – 6                            sold during a festival, how many total items
                                                                             were sold?             (Algorithmic Thinking)
                               (c)  28 + 35 + 10
                                                                                    (a)  9,500          (b)  12,000

                               (d)  28 + (33 – 10)                                  (c)  10,500         (d)  13,500

                     16        Computational Thinking-7 (Mathematics)

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