Texts: Show how you might sketch base pieces to illustrate each computation by filling out each part of the following questions.
a. 586+361
i) Combine sets for a total of
flats(s),
longs(s), and
unit(s).
ii) Regroup
unit(s) to
long(s), and
unit(s).
iii) Regroup
long(s) to
flat(s), and
long(s).
iv) There are now
flat(s),
long(s), and
unit(s).
v) 586+361=
b. 654-338
i) Regroup 654 to
flat(s),
long(s), and
unit(s).
ii) Take away 338 to obtain
flat(s),
long(s), and
unit(s).
iii) 654-338=
