Mastering Basic Division Concepts

Mrs. Oppenheim introduces basic division to third graders, explaining it as both backwards multiplication and dividing numbers into equal groups. She demonstrates dividing 20 by 4 using circles to represent groups, showing that each group contains 5. To verify, she uses multiplication, confirming that 5 times 4 equals 20.

What is one way to understand division?

• As adding numbers

• As forward addition

• As backwards multiplication

• As subtracting numbers

How can division be visualized?

• As combining groups

• As breaking a number into equal groups

• As adding numbers

• As subtracting numbers

How many circles are drawn to divide 20 by 4?

• 2

• 3

• 4

• 5

What is the result of dividing 20 by 4?

• 3

• 4

• 5

• 6

How many marks are made in each circle when dividing 20 by 4?

• 4

• 5

• 6

• 7

What multiplication fact can be used to check the division of 20 by 4?

• 4 times 4 equals 20

• 5 times 4 equals 20

• 7 times 4 equals 20

• 6 times 4 equals 20

Why is it useful to check division with multiplication?

• To practice multiplication

• To avoid using circles

• To make the division faster

• To make sure the division is correct