Let's test what you know about multiplication and division number families. For this activity, you'll need two sets of three cards. You can make each set from differently colored cards. For example, one set can be colored yellow, and the other set can be blue. On the yellow set, write these numbers: 18, 9, and 2. On the blue set, write the following symbols: x, =, and ÷. Take a piece of paper and divide it into two columns. Label one column "True" and the other one "False." Now you're all set.
Shuffle each set of cards and place them side by side on the table. Now take a card from each set and place them face down and side by side as follows: one yellow card, one blue card, another yellow card, another blue card, and one yellow card last. Make sure your cards are face down. Now turn them over. Read the division fact or multiplication fact you have created. Is the fact you created true or false? Write it on your piece of paper under the correct column.
For example, 18 ÷ 2 = 9 should be written in the "True" column. Then 2 = 9 ÷ 18 should be placed in the "False" column. Shuffle each set of cards again and try to make a list of possible combinations.
You can create more yellow cards and write these sets of numbers:
5, 4, 20
8, 4, 32
7, 6, 42
2, 5, 10
9, 3, 27
Write your list on separate sheets of paper. How many multiplication and division facts are in the "True" column and how many are in the "False" column?
Ready to move on to the next lesson?
Writing Tens and Hundreds Numbers in Place Value Charts
