How do you find out how many bees are in a hive by

using a chart ?

In this lesson you will learn how to subtract by using a

hundreds chart.

Let’s Review

Decomposing is taking apart a number.

5 23

320

Let’s Review

Ones increase and decrease horizontally.

Tens increase and decrease vertically.

Core Lesson

A bee hive has 76 bees. 24 bees fly away. How many bees are left in the hive?

Core Lesson

76 - 24 =

Locate 76 on the hundreds chart.

Core Lesson

76 - 24 =

Decompose 24

20 4

Core Lesson

76 - 24 =

24

20 4

Core Lesson

76 - 24 =

24

20 4

52

A Common Misunderstanding

In subtraction the order doesn’t matter.

does

10 - 7 = 3 7 - 10 = 3

Core Lesson

A store has 89 toy cars. They sell 58 toy cars. How many toy cars does the store have left?

Core Lesson 89 - 58 = Locate 89.

50 8

Decompose 58

Core Lesson 89 - 58 =

50 8

58

Core Lesson 89 - 58 =

50 8

58

31

In this lesson you have learned how to subtract by

using a hundreds chart.