commutative property power point

Number Families

Learning How to Solve Missing Addend Problems

Multiplication and Division problems use the same numbers.

These groups of numbers are called number families.

Once you know the numbers in the number family, you’ll be able to

memorize all of your multiplication and division

problems!

Here are some number families. Write down four problems that

you can make from those numbers in the same family on a piece of paper. The first one has been

done for you.

Now it’s your turn! Write your answers on your paper.

Figure out the missing number in the number family before writing your number sentences.

Now see if you can write the missing number from each

equation. Remember to think about the other numbers in that

number family. You will have to work quickly and quietly to finish.

Good Luck!

7x___=42

9x8=___

__x4=12

15÷__=3

108÷9=___

__x3=9

48÷__=12

9÷__=9

___÷9=11

6x__=42

__x5=30

40÷__=8

___÷10=10

4x__=44

9x__=36

54÷9=__

90÷__=10

4x__=32

24÷6=__

8x__=48

9x__x4=72

__x4x5=60

Now go over your answers with the class and see how you did.