Each book has 10 of 3 different kinds of puzzles, for a total of 30 fun puzzles
to help with mastering addition or subtraction of 2-digit numbers.
Puzzles 1-5: Problems do not require carrying (regrouping).
Puzzles 6-20: A mixture of problems that do and do not require regrouping.
Puzzles 21-25: Some 3-digit answers; some problems require regrouping in both the 1's place and the 10's place.
Puzzles 26-30: Some problems with 3 addends.
Puzzles 1-5: Problems do not require borrowing (regrouping).
Puzzles 6-15: A mixture of problems that do and do not require regrouping.
Puzzles 16-20: Some 3-digit minuends; some problems require regrouping in both the 1's place and the 10's place.
Puzzles 21-25: Some 3-digit answers.
Puzzles 26-30: The puzzles include a few addition problems interspersed among the
subtraction problems. Having a mixture encourages flexibility in changing thought processes and gives practice in staying
Publishing Date: 2014
Author's note: I wrote and illustrated these two books at a time when my vision was
declining rapidly, because an antibiotic I'd taken was causing optic nerve damage. I did not
know if I'd soon be unable to do any more authoring work. It was a difficult time, but thankfully,
God chose to bless me with healing and restore my vision.
Addition...“This book is dedicated to my dearly beloved grandchildren, and
to God, who wants to give all of us the vision to see the world as he sees it.”
Subtraction...“This book is dedicated to my wonderful husband Ralph,
who supports me in all my author endeavors, and
to a faithful God, who's with us no matter what challenges life brings.”