EQUAL GROUPS
What does it mean for groups to be equal?
Each group has the same number of objects.
What can you use to show multiplication as repeated jumps?
A number line.
In an array, what do you count first?
Answer: Rows.
Solve: 3 × 4
Answer: 12
Draw 3 equal groups with 4 objects in each group. Write the multiplication equation.
Answer: 3 × 4 = 12
Use a number line to show 3 × 4. How many jumps should you make?
Answer: 3 jumps of 4; you land on 12.
How many rows would you draw for 3 × 5?
Answer: 3 rows.
Solve: 6 × 5
Answer: 30
There are 5 groups with 2 objects in each group. How many objects are there altogether?
Answer: 10
What number do you land on if you make 5 jumps of 3 on a number line?
Answer: 15
How many objects would be in each row for 3 × 5?
Answer: 5.
What is 4 × 7?
Answer: 28
Draw equal groups to represent 4 × 6.
Answer: 4 groups of 6 = 24
Describe how you would use a number line to solve 4 × 5.
Answer: Make 4 equal jumps of 5 and land on 20.
How many objects are in an array with 4 rows and 6 objects in each row?
Answer: 24.
True or False: 3 × 5 = 5 × 3
Answer: True
There are 6 equal groups with 5 objects in each group. Write the multiplication equation and find the total.
Answer: 6 × 5 = 30
You make 6 equal jumps and land on 24. How many spaces did you jump each time?
Answer: 4 spaces each time.
Draw an array to represent 5 × 7. How many objects should your array have altogether?
Answer: 35.
What property of multiplication tells us that we can multiply numbers in any order and get the same product?
The commutative property of multiplication.