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    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_09\Chap_09
                     \ 10-Nov-2025  Bharat Arora   Proof-8                                    Reader’s Sign _______________________ Date __________

                                                                                                  Mental Maths

                    Choose the correct option.                                                          Century
                                                                                                          21 st
                                                                                                         Skills  #Critical Thinking
                           1.  2 m = ____________ mm.

                               a.  2000                 b.  200               c.  20000               d.  20
                           2.  If 3 km 500 m is subtracted from 10 km, then the result is

                               a.  65 km                b.  6 km 500 m    c.  5 km 600 m              d.  56 km

                           3.   If 8 L of juice is distributed out of 10 L 500 mL of juice, the quantity of juice left is
                               ___________ mL.
                               a.  2500                 b.  1400              c.  1600                d.  none

                           4.   Rohan, Vinit and Mukesh purchased 1 kg 500 g of grapes. 275 g of grapes rotted
                               after 2 days. Now, the weight of fresh grapes is

                               a.  600 g                b.  800 g             c.  1 kg 225 g          d.  500 g

                           5.   Rajesh purchases a pencil whose length is 18 cm. After 4 days, his pencil's length is
                               6 cm 4 mm. What length has been used up by Rajesh?
                               a.  11 cm 3 mm           b.  11 cm 6 mm    c.  6 cm 11 mm              d.  11 cm 8 mm

                                                                                                           HOtS

                                                                                                    21 st
                                                                                                  Century   #Computational Thinking
                                                                                                   Skills
                    Find  the  longest  and  the                                                                     1 cm

                    shortest route in this treasure                                                                      1 cm
                    hunt. You can go around the

                    obstacles  but  cannot  jump           STArT
                    over them.  You  can only
                    walk on the yellow tiles and

                    not on the grass. Can you
                    find the length of your route
                    in centimetres? Look for the

                    1 cm clue in the map.

                                                                                                                 167
                                                                                                 Measurement

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