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.