Page 35 - steps 3b.pdf
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DRM33

      ~ Subtraction (l)  II  II  II  II  II  II  II  3b:ll





            o Write any three-digit number up to  100.

            D  Each digit should be different.                             -----i~~  345
            D Write the number in  reverse.                                -----i~~  543

            D Subtract the smaller number from the larger.                 ---!~~  543 - 345 = 1 q8

            D Add together the digits in  the answer.                      -----i~~  1 +q+8= 18





          rn  Try this with 6 different numbers up to 500.

               a                                            b
          ~














               c                                            d
















               e                                            f

















          ~ Does the answer always add up to  18?






                                                              Subtracting three-digit numbers; investigating general
         Name                                                 statements.
         Date

       © HarperCollinsPub/ishers Ltd 1997 STEPS 3b Differentiation Pack
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