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    Mental Maths

                                                                                                   21 st
                                                                                                  Century   #Critical Thinking
                Choose the correct option.                                                        Skills

                     1.  Which one of the following is used to measure the weight of a rice bag?
                        a.   Compass             b.   Thermometer         c.   Balance             d.    Ruler

                    2.  Which unit is used to measure the weight of a television?
                        a.   kg                  b.   mg                  c.   m                   d.    km

                    3.  7 kg 784 g can be converted into g as:

                        a.   7784 g              b.   7846 g              c.   6874 g              d.    6847 g

                    4.  Each tea packet weighs
                                                                                                    1 kg
                        a.   a half kilogram
                        b.   a quarter kilogram

                        c.   a kilogram
                        d.   three-quarters of a kilogram

                                                                                                       HOTS

                                                                                                   21 st
                                                                                                  Century   #Subject Enrichment
                                                                                                  Skills
                     1.  For a balance scale where weights can be placed on the same pan as the object or
                        on the opposite pan, what is the smallest set of standard weights needed to accurately
                        determine every mass from 1 kg to 40 kg?

                     2.  Simmi has 3 bags of the same size but not the same
                        weight. Simmi has to find out which is the heaviest. She
                        has a balance but no weights. Can you explain to Simmi
                        how she can find out which bag is the heaviest?

                                  A                    B                  C

                       168       Mathematics 3

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