Part 1
    C              Bdim
   Two and two are four
    C                 Bdim
   Four and four are eight
    C                    F
   Eight and eight are sixteen
    C                       G
   Sixteen and sixteen are thirty-two

    C               Bdim
   Two and two are four
    C                 Bdim
   Four and four are eight
    C                    F
   Eight and eight are sixteen
    C           G    =      C
   Sixteen and sixteen are thirty-two

Part 2
   Inchworm, inchworm
   Measuring the marigolds
   You and your arithmetic
   Will probably go far
   Inchworm, inchworm
   Measuring the marigolds
   Seems to me you stop and see
   How beautiful they are.

Part 1 and part 2 together

Part 1