Page 19 - 新思维数学活动用书2 样章
P. 19

1   Numbers to 100


           Challenge


           11   How many large spots are in the box?

                 How many small spots are in the box?

                  Estimate, then use the two boxes below


                 to help you count the large spots and

                 then the small spots.



                       Tip


                       You could count in twos, fives or tens to find the total.




                                                                                  Estimate


                                                                          10     20      50     100



                                                                                   Count








                                                                                  Estimate


                                                                          10     20      50     100



                                                                                   Count







                  Compare your estimate and count with another person’s.

                 Do you both agree?












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