I was an odd child, I guess. I loved to play with dominoes – not the actual game (that would have involved human interaction), but to arrange them in a large diamond from double zero at the bottom to double nine at the top. When introducing addition and subtraction or sharing a new appreciation of patterns with students, I start with double-nine dominoes (with each number in a different color, no less – these are available at Walgreens, Target, etc.) and help them build this diamond. These worksheets replicate that diamond on 2 sheets of paper, the bottom half of the diamond on the first page, the top half on the second. The “completed” sheets show the number pattern that will make the number families clear, e.g., the nines include 9 + 0, 8 + 1, 7 + 2, 6 + 3, and 5 + 4 (in that order). Have the students study the completed diamond to find how the pattern works, then fill in (from memory, if possible) the one with blanks.
The Add Subtract Number Family Fill-In is to help students become proficient at showing the addition and subtraction facts that go with each family. I suggest that you print them on card stock, laminate and cut on the dotted lines. You’ll end up with 5 cards on which students can write the facts with fine-point dry erase markers. The card showing only one family can be used for 0, 1, 17 or 18; the card with two families is for 2, 3, 15 or 16; the card for three families is for 4, 5, 13 or 14; the card for four families is for 6, 7, 11 or 12; and the one for 5 families is for 8, 9 and 10.
SEE RELATED NUMBER FAMILY DOMINO CARDS AND FLASHCARDS
Susan, Morris Tutoring Productions