Page 8 - 新思维数学活动用书2 样章
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1.1  Numbers to 100



                Worked example 1

                This is a column from the                  Answer:


                100 square.

                Write the                         1            1

                missing numbers.


                                                 11           11                  Count on in tens.
                                                                                     11, 21, 31, ...


                                                              21            The number of ones stays
                                                                              the same. The number

                                                                                  of tens changes.
                                                              31





                                                              41




                                                              51




                                                              61





                                                              71




                                                              81




                                                 91           91


















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