Subtracting Groups in 3rd Grade Math

The video tutorial for third graders covers lesson 312, focusing on multiplication by adding groups. Students are guided through warm-up exercises, sketching, and problem-solving activities using toy tricycles and cars. The lesson emphasizes understanding multiplication through visualization and helper facts, encouraging students to use their math journals for practice.

What items are required for the math activity?

• Whiteboard, marker, math book, laptop

• Math book, journal, pencil, whiteboard, marker, eraser

• Notebook, pencil, eraser, calculator

• Math book, calculator, ruler, eraser

Tags

CCSS.1.OA.A.1

What is the result of multiplying 2 by 5?

• 10

• 12

• 8

• 14

Tags

CCSS.3.OA.C.7

If you add one more group of 2 to 2 times 5, what do you get?

• 12

• 10

• 16

• 14

Tags

CCSS.3.OA.A.3

What is the result of 10 times 3?

• 20

• 40

• 50

• 30

Tags

CCSS.3.OA.A.1

What is the result of adding one more group of 10 to 30?

• 40

• 20

• 30

• 50

Tags

CCSS.1.NBT.C.5

What is the result of 4 times 5?

• 20

• 25

• 15

• 10

Tags

CCSS.3.OA.C.7

How many wheels are there in total if Danielle has 10 toy tricycles, each with 3 wheels?

• 36

• 33

• 30

• 27

Tags

CCSS.3.OA.A.3

What is the multiplication model for 10 toy cars each having 4 wheels?

• 10 times 6 equals 60

• 10 times 5 equals 50

• 10 times 3 equals 30

• 10 times 4 equals 40

Tags

CCSS.3.OA.A.3

After removing one toy car, how many wheels are left if each car has 4 wheels?

• 36

• 40

• 34

• 38

Tags

CCSS.2.OA.C.4

What is the result of 4 times 7 using the helper fact of 5 times 7?

• 28

• 35

• 30

• 25

Tags

CCSS.3.OA.A.1