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    E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\Answers
                 \ 11-Sep-2024  Sonia Suyal   Proof-3                                         Reader’s Sign _______________________ Date __________

                     3.  17                    4.  (a) 9   (b)  6                        Chapter 7. Geometry
                       32                                               Let’s Recall
                     5.  (a)  `60   (b)  `30                              1.  (a)  Square or diamond, Two-way traffic  (b) Circle, No entry
                     6.  (a)   1   (b)   1     (c)   1                      (c)  Triangle, Left-hand curve
                          3           3           3                         (d)   Rectangle, Electric vehicle charging station
                                                                        Quick Check
                  Mental Maths
                                                                          1.  Straight path   2.  Line segment
                        2             1           6           21
                     1.            2.          3.          4.           Practice Time 7A
                       11             7           10          26

                     5.  (a)  6    (b)  15     (c)  4      (d) 4          1.  (b)  Line,  AB  (c)  Line,  MN  (d)  Ray,  PQ
                  Chapter Assessment                                      2.  (a)  4;AB, BC, CD, DA     (b)  3; PQ, QR, Pr
                     1.  (a)  (iii)   (b)  (i)                              (c)  5; GH, HI, IJ, JK, KG   (d)  6; EF, FG, GH, HI, IJ, JE
                                                                          3.  4; AE; BF, CG, DH
                          2           1           3                       4.
                     2.  (a)       (b)         (c)                          (a) ray     (b)  6      (c)  1
                          5           4           20                    Think and Answer
                     3.  (a)  8    (b)  30     (c)  21     (d) 22
                     4.  (a)  4    (b)  3      (c)  2      (d)  5            Yes
                        4             1                                 Practice Time 7C
                     5.            6.          7.  Riya = 9, Joe = 12
                       12             3                                   1.  (a)  Circle   (b)  Triangle   (c)  Rectangle   (d)  Square
                          4       3     7         5       8               2.  (a)  8    (b)  13     (c)  14
                     8.  (a)   (b)   (c)       (d)     (e)
                         10      10     10       10       10              3.  (a)  3    (b)  3      (c)  7
                  Brain Sizzlers                                          4.  (a)  Square   (b)  Rectangle   (c)  Circle   (d)  Triangle
                                                                          5.  (a)  rectangle   (b)  triangle   (c)  circle   (d)  square
                         Input       Brand    Drained Water  Fresh Water  6.  (a)  T    (b)  T      (c)  F      (d)  F
                         20 L         A           10 L        10 L
                                                                        Maths Fun
                         24 L         B           8 L         16 L        1.  14        2.  15
                         36 L         C           9 L         27 L      Quick Check
                                    Model Test Paper – 1                  1.  Cuboid    2.  Sphere   3.  Cone   4.  Cylinder
                     1.  (b)       2.  (b)     3.  (c)     4.  (c)      Practice Time 7D
                     5.  (b)       6.  (a)     7.  (b)     8.  (b)        1.  (a)  Circle   (b)  Rectangle   (c)  Square   (d)  Triangle
                                                                          2.  (a)  Yes   (b) no     (c) no      (d)  Yes
                     9.  (b)       10. (c)
                                                                            (e)  no     (f)  Yes
                    11.  (a)  addition   (b)  999   (c)  dividend   (d)  448
                                                                          3.  Shape   Number of faces  Number  Number
                       (e)  9899   (f)  dividend                               of    Plane   Curved   of edges  of
                                                                             Objects                      vertices
                    12.  (a)  Ascending order = 2397 < 3267 < 6501 < 8709            faces   faces
                          Descending order = 8709 > 6501 > 3267 > 2397        Cube     6      0      12     8
                       (b)  Ascending order = 3076 < 4093 < 7804 < 9712       Cuboid   6      0      12     8
                          Descending order = 9712 > 7804 > 4093 > 3076        Cone     1      1      1      1
                    13.  (a)  (iv)   (b)  (iii)   (c)  (i)   (d)  999        Cylinder  2      1      2      0
                    14.  2728 =  2   Thousands +  7   Hundreds +  2   Tens +  8   Ones  4.  (a)  Top view   (b)  Side view   (c)  Front view
                       + 111 =  0   Thousands +  1   Hundred +  1   Ten +  1   one  Practice Time 7E
                       2839  =  2   Thousands +  8   Hundreds +  3   Tens +  9   Ones  1.  (a)  West   (b)  North  (c)  East   (d)  West
                    15.   17      –      7      =      10               Brain Sizzlers
                                                                          1.  18
                          –              –             –
                                                                        Mental Maths
                          6       –      3      =      3
                                                                          2.  3         3.  Sphere   4.  4
                          =              =             =
                                                                        Chapter Assessment
                          11      –      4      =      7
                                                                          1.  (a)  (i)   (b)  (ii)   (c)  (i)
                          3           4                                   2.  (a)  5, 1, 2   (b)  16, 3, 1
                    16.  (a)       (b)
                          7           7                                   3.  Water bottles, Dry cell
                    17.  126                                              4.  Ice-cream cone, Birthday cap
                    18.  Smallest = 3078 ; Greatest = 8730 ; Difference = 5652  6.  (a)  Cone   (b)  Cylinder   (c)  Cuboid   (d)  Sphere
                    19.  2030                                               (e) Cube

                  Mathematics-3                                                                                         229

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