Number Bond Math Facts Flash Cards

I have a child who has great difficulty learning math facts.  Our math program, Singapore Math, uses number bonds to learn math facts.  I have also seen the concept referred to a number families.  

Whatever you call them, I think it's a logical way to learn math facts.  The gist of it is that rather than learning addition facts in a vacuum, you learn addition and subtraction.  So, instead of learning just

                                                               1+ 3 = 4

                                                              You learn

                                                               1 + 3 = 4

                                                               3 + 1 = 4

                                                               4 - 3 = 1

                                                               4 - 1 = 3

Likewise, you learn multiplication and division at the same time.

                                                               4 x 5 = 20

                                                               5 x 4 = 20

                                                               20/5 = 4

                                                               20/4 = 5

I think this is a much more intuitive way to learn math facts.  So I was excited when I found these number bond/fact family flash cards.  Check them out. My affiliate links below will take you straight to them.